Robust Backer Rod – Premium Joint Filler for Sealants & Waterproofing

Robust Backer Rod is a high-quality, closed-cell polyethylene foam rod designed to fill gaps, control joint depth, and improve the performance of sealants in construction projects. It creates the perfect backing surface for silicone, polyurethane, acrylic, and hybrid sealants, ensuring stronger adhesion, cleaner finishing, and long-lasting flexibility.

Engineered for durability, Robust Backer Rod prevents three-sided bonding, reduces material usage, and ensures a correct 2:1 width-to-depth ratio—essential for strong, flexible, and crack-free joints. Its moisture-resistant, chemical-resistant, and highly compressible structure makes it ideal for expansion joints, concrete cracks, aluminum frames, façades, flooring, plumbing penetrations, window gaps, and waterproofing applications.

Lightweight, easy to cut, and simple to install, Robust Backer Rod is the trusted choice of contractors, builders, and waterproofing experts across Pakistan. Whether used in residential, commercial, or industrial projects, it guarantees professional-grade sealing performance and long-term structural protection.

Robust Backer Rod is a high-performance joint filler designed to deliver superior sealing support for expansion joints concrete gaps glazing joints façade joints aluminum frame gaps and all types of construction movement joints across Pakistan providing unmatched durability flexibility long-term strength and maximum sealant efficiency for modern buildings commercial structures residential homes and industrial facilities
This premium quality foam rod is engineered with a high-density closed cell and open cell structure that ensures perfect compressibility shape control and correct sealant depth making it the top choice for waterproofing experts civil engineers builders and contractors who need reliable long-lasting and professional-grade joint preparation for sealant application in every project.

Robust Backer Rod prevents three-sided adhesion which is the leading cause of sealant failure cracking leakage and premature breakdown ensuring that the sealant adheres only to the sides of the joint allowing natural movement flexibility and structural stability even under heavy load weather changes vibration or environmental stress
This powerful construction accessory works perfectly with silicone sealant polyurethane sealant acrylic sealant polysulfide sealant MS polymer sealant and bitumen-based sealants giving contractors a stable base that enhances adhesion durability performance and overall waterproofing efficiency in both indoor and outdoor environments.

In Pakistan where temperature fluctuation humidity monsoon rains structural shifting and environmental pressure are common the need for a reliable joint filler becomes essential and Robust Backer Rod delivers exceptional resistance to water moisture chemicals UV sunlight fungus mold dirt and joint deformation making it ideal for long-term use in any part of the country including Lahore Karachi Islamabad Multan Peshawar Rawalpindi Faisalabad Sialkot and more
Whether it is used for expansion joints on rooftops in basements underground water tanks terraces parking areas façades pavements bridges highways or industrial floors the backer rod ensures accurate joint geometry correct sealant depth and superior waterproofing performance that lasts for years without failure.

The construction industry across Pakistan trusts Robust Backer Rod because it reduces sealant consumption lowers material wastage increases cost-effectiveness and improves overall sealing quality which ultimately helps contractors save time reduce labor cost and deliver premium-grade work with consistent professional finishing
This backer rod comes in multiple diameters such as 6mm 8mm 10mm 12mm 15mm 20mm 25mm 30mm and more making it suitable for any type of gap size whether small medium or large ensuring compatibility with all types of architectural designs infrastructure frameworks or industrial projects.

Its lightweight structure makes it extremely easy to install handle store cut and apply even in curved joints irregular surfaces or tight construction zones allowing workers to achieve perfect fitting without specialized tools complicated processes or heavy labor efforts
The simple installation process of cleaning the joint selecting the correct rod size pressing it gently into place and applying sealant on top ensures strong adhesion durability flexibility and long-lasting protection against leakage moisture seepage dust infiltration or joint damage.

Robust Backer Rod plays a vital role in glazing works where maintaining uniform sealant thickness is critical for glass stability waterproofing elegance and structural bonding preventing sagging uneven joints and poor finishing that compromise the building’s beauty and performance
It also acts as an effective thermal insulation layer between joints reducing heat transfer preventing thermal expansion damage and increasing energy efficiency which is extremely beneficial for modern architecture in Pakistan’s hot climate.

The material is chemically stable non-toxic odorless and safe for indoor applications including kitchens washrooms laundries interior glass partitions and hygienic environments ensuring long-life performance without degradation harmful emissions or health concerns
Its resistance to water absorption prevents mold mildew algae fungal growth and internal joint deterioration making it ideal for wet areas swimming pools tanks bathrooms balconies and exterior surfaces that face continuous moisture exposure.

Robust Backer Rod enhances the life of waterproofing systems commonly used in Pakistan such as bitumen coatings liquid membranes polyurethane membranes acrylic waterproofing compounds and elastomeric coatings by providing the correct joint shape promoting strong sealing and preventing penetration of water that causes long-term structural damage
It is widely recommended by waterproofing consultants civil engineers specification writers architects and construction experts because it ensures the highest level of protection durability and sealing performance in all kinds of sealing works.

For expansion joints in pavements roads walkways plazas commercial shopping malls and industrial sites the backer rod supports movement caused by temperature changes heavy load vibration settlement and dynamic pressure preventing the sealant from tearing stretching cracking or detaching over time
This movement-friendly design helps maintain structural integrity protects concrete slabs prevents water ingress and extends the lifespan of the surface reducing repair needs maintenance costs and long-term damage risks.

Contractors appreciate Robust Backer Rod because it offers exceptional compatibility with modern sealant technologies ensuring smooth finishing perfect controlled depth and enhanced joint flexibility while preventing overfilling or underfilling that leads to poor adhesion and sealant waste
Its closed-cell surface prevents sealant from bonding to the rod ensuring natural elasticity and allowing the sealant to stretch and compress with building movement without losing performance.

For building façades curtain walls aluminum frames glass panels and architectural joints the backer rod provides uniformity beauty and protective stability that enhance both appearance and structural resilience
It ensures airtight and watertight joints protecting interior areas from rain dust wind humidity insects noise and environmental pollutants improving overall building performance.

Robust Construction Chemicals has built a strong reputation across Pakistan for providing high-quality waterproofing heat proofing and construction solutions and the Robust Backer Rod stands as one of the most essential products used by professionals who demand reliability consistency and top performance
Clients trust the brand because of its commitment to durability advanced engineering market-leading materials and continuous innovation that aligns with global sealing standards and Pakistan’s construction challenges.

The Robust Backer Rod supports internal and external waterproofing systems by maintaining ideal joint width-to-depth ratios ensuring sealant elasticity preventing structural leakage and creating a high-performance barrier that withstands the test of time
This makes it a crucial component for roofs basements tanks walls floors decks terraces expansion gaps and concrete structures requiring lifetime durability and long-term sealing protection.

From mega projects like hospitals airports industrial warehouses shopping malls and highways to small residential homes offices shops and factories the Robust Backer Rod provides consistent reliability strength and sealing excellence
Its ability to function in extreme conditions heat cold moisture chemical exposure and structural movement makes it one of the strongest joint fillers available in Pakistan’s construction market.

Robust Backer Rod continues to gain popularity because of its cost-efficiency impact resistance high compressibility easy installation and superior waterproofing benefits that no other conventional filler material can match
Its long lifespan structural flexibility sealing support and compatibility with all major sealant brands make it the number one choice for professional joint preparation.

To explore more products like waterproofing chemicals heatproofing coatings primers membranes and construction materials you can visit Robust Construction Chemicals official website for full product details technical insights and professional solutions designed for Pakistan’s climate and construction industry
This ensures you get premium-grade performance durability and protection in all your sealing and construction projects.

1.

Robust Backer Rod is a high-density joint filler designed for sealants, expansion joints, concrete gaps and glazing works. It ensures perfect sealant depth, movement control and long-lasting waterproofing performance for residential, commercial and industrial projects in Pakistan.

2.

Upgrade your sealing quality with Robust Backer Rod — the professional choice for expansion joints, façade gaps, aluminum frames, pavements and waterproofing systems. Provides excellent flexibility, moisture resistance and stable sealant support for long-term durability in Pakistan.

3.

Robust Backer Rod helps prevent three-sided adhesion, improves sealant performance and reduces material wastage. Ideal for silicone, polyurethane, acrylic and MS polymer applications. Perfect for roofs, basements, pavements and glazing joints in Pakistan.

Robust Backer Rod is a professional-grade joint filler designed for expansion joints, façade sealing, glazing gaps and concrete repair works in Pakistan. Its high-density closed-cell foam structure ensures perfect sealant depth, superior flexibility, enhanced adhesion and long-lasting waterproofing performance. Ideal for silicone, polyurethane, acrylic and MS polymer sealants, it prevents three-sided adhesion, reduces sealant waste and improves joint durability. Widely used in roofs, basements, pavements, aluminum frames and industrial structures for maximum protection, leak prevention and structural stability.

1.

Robust Backer Rod is a premium closed-cell foa.m rod designed to deliver perfect sealant depth, superior adhesion control and long-lasting flexibility for expansion joints, glass glazing, concrete gaps and waterproofing systems. Highly durable, water-resistant and easy to install, it enhances sealant performance, prevents cracking and ensures long-term structural protection for all projects in Pakistan.

2.

Robust Backer Rod is trusted across Pakistan for providing maximum sealing efficiency in expansion joints, aluminum frames, façade gaps and pavement cracks. Its flexible closed-cell structure prevents moisture, reduces sealant consumption and ensures ideal joint geometry. Perfect for contractors, builders and engineers looking for professional-grade waterproofing and long-life sealing solutions.

3.

Ensure stronger, leak-proof and movement-friendly joints with Robust Backer Rod. Specially designed for concrete slabs, walkways, parking decks, curtain walls and glazing systems, this foam filler supports all types of sealants, prevents adhesion failure and increases sealant life. A must-have product for waterproofing, construction and maintenance experts across Pakistan.

Robust Backer Rod is a high-density, closed-cell and open-cell foam joint filler engineered to deliver unmatched performance in sealant support, expansion joint filling, and concrete gap preparation. Designed specifically for Pakistan’s construction environment, it provides flawless sealant depth control, flexibility, waterproofing stability, and long-term structural performance. Whether used in residential homes, commercial plazas, mega infrastructure projects, or industrial buildings, Robust Backer Rod ensures that joints remain elastic, leak-proof, and durable for years.

Professional Joint Preparation for Sealants

Robust Backer Rod is essential for creating the perfect “hourglass” sealant shape recommended by global construction standards. This ensures:

• Correct joint width-to-depth ratio

• Maximum elasticity and movement accommodation

• Zero three-sided adhesion

• Stronger sealant bonding

• Longer sealant lifespan

Professionals across Pakistan trust Robust Backer Rod because it guarantees premium finishing and reduces sealant failure caused by improper application.

Ideal for All Sealant Types

Compatible with:

• Silicone Sealant

• Polyurethane Sealant

• Acrylic Sealant

• MS Polymer Sealant

• Polysulfide Sealant

• Hybrid and High-Strength Glazing Sealants

This compatibility makes it the most versatile joint filler rod for every sealing, waterproofing, and glazing application.

Weatherproof & Moisture-Resistant Joint Filler

Robust Backer Rod is manufactured with a closed-cell structure that prevents:

• Water absorption

• Moisture retention

• Fungus, mold, and algae growth

• Material degradation under humidity

Perfect for wet environments such as:

• Bathrooms

• Washrooms

• Kitchens

• Water tanks

• Swimming pools

• Roof joints

• Exterior facades

It remains stable even in monsoon, coastal humidity, and extreme temperature variation across Pakistan.

Best for Expansion Joints in Pakistani Construction

Construction in Pakistan faces heavy load stress, temperature fluctuation, structural movement, and vibration. Robust Backer Rod handles these challenges perfectly by supporting sealant elasticity and preventing cracking.

Ideal for:

• Concrete slabs

• Roof expansion joints

• Parking areas

• Industrial floors

• Highways & bridges

• Walkways & pavements

• Shopping malls and plazas

• Multi-story buildings

It allows joint movement without damaging the sealant, ensuring long-term structural protection.

Perfect for Glass & Aluminum Glazing Works

Robust Backer Rod is widely used in:

• Curtain wall systems

• Glass-to-aluminum joints

• Window frames

• Façade sealing

• Structural glazing

Benefits include:

• Uniform sealant thickness

• Prevents sagging or bulging

• Improves aesthetics

• Ensures tough weatherproof sealing

• Protects against noise, dust, air, insects & rain

It delivers a clean, professional look with high waterproofing performance.

Heat Resistant & Energy Efficient

In Pakistan’s hot climate, expansion and contraction are major causes of joint failure. The Robust Backer Rod acts as a thermal barrier, reducing heat transfer and preventing thermal expansion damage.

It helps:

• Maintain sealant flexibility

• Reduce energy loss

• Improve thermal insulation

• Strengthen the joint structure

Perfect for heat-exposed areas such as roofs, sun-facing glass facades, boundary walls, and metal joints.

Strengthens Waterproofing Systems

Backer rod improves performance of waterproofing products like:

• Bitumen coatings

• PU liquid membranes

• Acrylic waterproofing

• Cementitious coatings

• Elastomeric roof coatings

• Anti-leak sealants

It ensures:

• Perfect joint preparation

• Strong sealant adhesion

• Long-lasting waterproofing

• Reduced risk of leakage and seepage

Used widely by waterproofing contractors in Lahore, Karachi, Islamabad and all major cities.

Key Benefits of Robust Backer Rod

✔ Prevents Three-Sided Adhesion

Ensures sealant stays flexible and does not tear under movement.

✔ Reduces Sealant Consumption

Helps achieve the right depth, saving material costs.

✔ Extremely Lightweight

Easy to handle, store, cut, and install.

✔ Provides Perfect Joint Shape

Improves performance and aesthetic look.

✔ Durable & Long Life

Does not rot, crumble, or deform even after years.

✔ Chemical & UV Resistant

Suitable for outdoor and high-heat projects.

Where Robust Backer Rod Is Used

Construction Joints

• Floors

• Roofs

• Slabs

• Walls

• Concrete beams

Glazing Works

• Curtain walls

• Windows

• Aluminum frames

• Glass partitions

Infrastructure

• Bridges

• Highways

• Airports

• Tunnels

• Flyovers

Waterproofing Projects

• Basements

• Water tanks

• Swimming pools

• Parking plazas

• Terraces

Why Choose Robust Backer Rod for Your Projects?

• Trusted brand in Pakistan

• Industry-standard quality

• Professional-grade results

• Long-lasting performance

• Cost-effective

• Compatible with all sealants

• Perfect for small and mega-scale construction

• Used by top contractors and waterproofing companies

Robust Construction Chemicals ensures that every backer rod delivers premium strength, reliability, and sealing support unmatched in the market.

Robust Backer Rod is Pakistan’s top-rated joint filler for expansion joints, glazing gaps and waterproofing applications. Its closed-cell foam structure delivers perfect sealant depth, long-term flexibility and high resistance against weather, moisture and cracking.

Seal your concrete joints, façades and aluminum glazing with Robust Backer Rod—built for professional contractors who need accuracy, durability and long-lasting waterproofing. Compatible with all major sealants used in Pakistan.

Robust Backer Rod provides unmatched sealing strength for buildings, bridges, pavements and architectural glazing. Prevents sealant failure, enhances flexibility and ensures leak-proof performance in Pakistan’s changing climate.

Choose Robust Backer Rod for high-density sealant backing, controlled joint movement and premium waterproofing protection. Trusted nationwide for residential, commercial and industrial construction projects.

Robust Backer Rod supports superior sealant adhesion, prevents three-sided bonding and delivers long-term waterproofing protection. Ideal for roofs, basements, façades, walkways and glazing joints across Pakistan.

Robust Backer Rod is a top-quality closed-cell foam joint filler that ensures correct sealant depth, prevents adhesion failure and enhances waterproofing strength. Suitable for expansion joints, glazing systems, pavements, façades and concrete repair across Pakistan.

Robust Backer Rod provides premium joint backing for silicone, PU, acrylic and MS polymer sealants used in roofs, walls, slabs, bridges and aluminum glazing. Offers flexibility, moisture resistance and long-term sealing performance for modern construction.

For durable expansion joints and leak-proof sealing, Robust Backer Rod is the ideal solution. Its high-density foam structure maintains joint shape, supports movement and prevents water ingress, making it perfect for commercial and industrial construction.

Robust Backer Rod ensures smooth, flexible and long-lasting sealing for concrete joints, glass frames, pavements, façades and rooftops. Designed for extreme weather and heavy movement, it enhances sealant life and improves overall project durability.

Get superior joint protection with Robust Backer Rod—engineered for high-performance sealing, thermal insulation, moisture resistance and perfect sealant shaping. Ideal for waterproofing companies, contractors and building professionals.

Robust Backer Rod is one of the most essential construction accessories used in modern sealant installation and joint filling because it creates the perfect joint depth and enhances the performance of sealants for long-term strength and durability
It is widely used in concrete joints, expansion joints, building gaps, façade openings, aluminum sections, and all types of construction areas where a stable, supportive and long-lasting seal is needed

Robust Backer Rod works as an advanced foam filler that helps maintain joint geometry and reduces material wastage by limiting the amount of sealant needed which ultimately decreases project cost and improves bonding performance
Most professional contractors in Pakistan prefer using backer rods from brands that ensure premium quality, uniform diameter, and maximum compression recovery and Robust Backer Rod has become one of the top choices due to its unmatched quality and reliability

This high-density polyethylene foam is extremely flexible lightweight and water-resistant making it the ideal solution for deep cracks where sealants alone cannot provide proper filling
The robust structure of this foam rod allows it to compress smoothly and fit into irregular or uneven gaps without losing shape or density which guarantees a perfect seal every single time

Construction experts choose Robust Backer Rod because it not only acts as a filler material but also enhances the overall structural strength of the sealant joint by giving it a correct 2:1 width-to-depth ratio
This ratio is the cornerstone of sealant performance and when maintained correctly it dramatically increases the lifespan of waterproofing sealants adhesives and joint-filling materials

Robust Backer Rod prevents sealants from bonding to the bottom of the joint which is a critical requirement in professional joint sealing applications
When sealants bond to three sides instead of two the joint loses its flexibility and cracks under pressure therefore backer rods create a perfect two-sided adhesion area which allows the sealant to stretch and compress naturally during temperature changes

Temperature variation in Pakistan whether extreme heat or cold causes expansion and contraction in concrete structures and Robust Backer Rod ensures the sealant joints stay flexible and crack-free
By absorbing stress and distributing movement evenly it prevents joint failure moisture ingress and future maintenance problems

In industrial setups Robust Backer Rod plays an important role in sealing machinery foundations and equipment bases where vibrations and heavy loads frequently occur
The foam structure helps minimize vibrations and prevents the sealant from tearing apart under continuous movement which makes it a smart choice for long-term industrial applications

The robustness of this foam rod allows it to withstand chemicals weather conditions heat and moisture making it suitable for both indoor and outdoor installations
Whether used in commercial plazas residential buildings shopping malls industrial facilities or agricultural structures it delivers consistent and reliable performance

Robust Backer Rod is also considered an energy-efficient accessory because it helps minimize air leakage around window frames door frames and building joints
This contributes to overall building insulation improves room temperature stability and reduces electricity consumption for cooling and heating which is highly beneficial for customers in Pakistan

The backer rod provides a smooth backing surface for sealants enabling professionals to achieve clean straight and aesthetically appealing joint finishing
Neat joint lines not only enhance the look of the structure but also improve long-term sealing performance and water resistance

Robust Backer Rod prevents dust insects debris and moisture from entering gaps which helps maintain a healthier safer and more comfortable living environment
This becomes extremely important in homes offices medical facilities and commercial buildings where hygiene and air quality must be maintained

In waterproofing applications especially roofs water tanks basements foundations and laundries backer rods act as a core support material for sealants to achieve a leak-proof result
Without a backer rod the sealant can sink crack or fail due to improper depth therefore using Robust Backer Rod is mandatory for premium waterproofing results

Contractors prefer Robust Backer Rod because it is easy to cut easy to insert and easy to shape even in narrow or curved spaces
This reduces installation time lowers labor cost and ensures accuracy in every joint filling project

The material is chemically inert and does not react with sealants adhesives or construction chemicals
This ensures long-term compatibility with polyurethane sealants silicone sealants acrylic sealants bitumen sealants and all types of hybrid joint fillers

Robust Backer Rod is available in multiple sizes to suit different types of joints including small cracks medium gaps and large expansion joints
Diameters can range from 6 mm 8 mm 10 mm 12 mm 15 mm 20 mm 25 mm 30 mm or even larger depending on the project requirements

From highways to airport runways from bridges to commercial malls and from domestic homes to industrial warehouses the use of Robust Backer Rod ensures performance stability and longevity
Its high compression and recovery properties enable it to regain its original shape after pressure is removed which is crucial for dynamic joints experiencing regular movement

In façade construction especially for high-rise buildings joints between aluminum sheets curtain walls glass panels and concrete slabs require a standard backer rod to maintain correct sealing dimensions
Robust Backer Rod ensures that the sealant does not flow inside the cavity and remains only on the top layer forming a high-performance weather-protective barrier

In flooring systems backer rods are used before applying epoxy joint sealants or polyurethane expansion joint fillers
This helps maintain stability during heavy foot traffic forklift movement conveyor belt vibration and industrial activities ensuring that the flooring joints remain firm and protected

Backer rods also help reduce noise transfer through building joints because their foam composition absorbs vibrations and acoustic energy
This makes Robust Backer Rod an excellent choice for schools hospitals offices residential apartments and sound-sensitive areas

One of the major advantages of using Robust Backer Rod is its strong resistance to mold fungus and bacterial growth
This feature is highly beneficial for humid environments kitchens basements bathrooms and areas where moisture may accumulate because it ensures hygiene and long-lasting cleanliness

Robust Backer Rod also prevents sealants from dripping or sinking into deep holes which helps maintain a uniform bead shape on the surface
This uniformity enhances waterproofing thermal insulation structural reliability and aesthetic finishing all at the same time

The product is ideal for precast concrete panel joints where large gaps must be filled evenly before applying sealants
Precast construction requires durable sealing solutions and Robust Backer Rod delivers consistent performance without deterioration

In bridge construction where frequent movement occurs due to traffic load and temperature changes backer rods act as essential cushion layers for joint sealants
Their flexibility helps absorb shock and reduce stress on sealant layers enhancing overall structural life and safety

Robust Backer Rod is also an eco-friendly material because it uses non-toxic foam and does not release harmful gases during installation or throughout its lifespan
This makes it safe for residential use commercial environments and industrial settings without compromising environmental standards

The product is lightweight making transportation storage and handling extremely easy for contractors and construction companies
This also reduces shipping costs and space requirements while providing high performance on-site

Robust Backer Rod provides superior gap-filling performance for renovation projects where old structures develop cracks openings or separation lines
It fills these gaps perfectly before applying waterproofing coating or sealant making the renovation stronger and more effective

For plasterboard installations drywall joints and woodwork the backer rod ensures stability and dimensional accuracy for sealants used in finishing
This prevents cracks in paint layers wall coatings or decorative finishes and maintains a smooth modern appearance

Robust Backer Rod offers excellent resistance against UV light and weather aging which means it will not crumble harden or deteriorate even under harsh sunlight
This feature is particularly important in outdoor installations where environmental exposure is constant throughout the year

The foam texture of the backer rod allows sealants to stretch correctly preventing early failure in joints
This increases the lifespan of joints in areas like swimming pools water tanks parking areas rooftops and exterior building joints

The product complies with international construction standards ensuring quality safety performance and long-term usability across all types of building projects in Pakistan
Architects engineers builders and consultants regularly recommend using high-quality backer rods because they know that sealant application is incomplete without them

When choosing the right backer rod for your project factors such as gap width joint depth temperature conditions sealant type and movement range must be considered
Robust Backer Rod is designed to handle all these variables and perform efficiently in every type of structure

Its closed-cell design provides stronger moisture resistance and prevents water absorption making it perfect for wet areas and critical waterproofing zones
This closed-cell technology also ensures uniform density and superior compression behavior compared to low-quality alternatives

Robust Backer Rod enhances joint performance in heavy-duty construction including warehouses industrial floors workshops manufacturing plants and storage facilities
In such demanding environments strong durable and flexible joint protection is essential for long-term functionality

The product also supports sealant curing by maintaining consistent depth and shape ensuring faster stronger and more reliable curing
This significantly improves sealant durability and prevents premature cracking or separation

In decorative architecture where aesthetics matter backer rods help create clean straight and symmetrical sealant lines
This ensures a high-end refined finish that enhances overall building appearance

Robust Backer Rod is color-stable chemical-resistant and easy to install making it suitable for both professionals and DIY users
Its consistent structure eliminates installation errors and guarantees long-lasting results

Using Robust Backer Rod is essential for premium quality construction because it minimizes wastage ensures precision and enhances structural integrity
Whether you are sealing expansion joints filling gaps sealing windows waterproofing foundations or protecting building envelopes this backer rod is the ideal support solution.