Description
Soudafoam Gap Filler – High-Performance Expanding PU Foam for Filling and Insulation
Soudafoam Gap Filler is a ready-to-use expanding polyurethane foam developed for professional sealing, filling and insulating applications. Designed for use in both residential and commercial construction projects, it expands to fill gaps, cavities and penetrations while creating an effective barrier against heat loss, draughts and noise transmission.
Suitable for builders, contractors, installers and serious DIY users, this versatile PU foam offers excellent adhesion to most common building materials and delivers reliable performance in a wide range of applications. Its stable formulation helps minimise shrinkage after curing, providing a neat and durable finish.
Key Features and Benefits
- Expands to fill gaps, voids and hard-to-reach spaces effectively.
- Provides excellent thermal insulation to help improve energy efficiency.
- Reduces sound transmission through joints, cavities and penetrations.
- Strong adhesion to most common construction materials.
- Low shrinkage after curing for a stable, professional finish.
- Fast curing formulation helps speed up installation work.
- Suitable for both interior and exterior applications when protected from UV exposure.
- Easy-to-use aerosol format for quick application on site.
Typical Applications
- Filling construction gaps and cavities around windows and doors.
- Sealing openings within roof and loft structures.
- Insulating around pipework and service penetrations.
- Reducing sound transfer through wall and floor voids.
- Improving thermal performance around installation joints.
- Filling spaces around ducting and ventilation systems.
- General gap filling in renovation, refurbishment and new-build projects.
- Supporting insulation works in cooling and refrigeration systems.
Application and Surface Preparation
For best results, surfaces should be clean, sound and free from dust, grease and loose contaminants. Lightly dampening the substrate before application helps promote curing and improves foam performance.
Shake the can thoroughly before use and periodically during application. Attach the supplied nozzle and apply the foam into the cavity, filling approximately one-third of the available space. The foam will expand during curing and fill the remaining volume.
For deeper gaps, apply in layers and lightly moisten between applications. Any uncured foam should be cleaned immediately using an appropriate PU foam cleaner. Once fully cured, excess material can be trimmed using a sharp knife and finished as required.
Where the foam will be exposed externally, it should be protected from UV light using paint, sealant, cladding or another suitable covering.
Advantages
- Combines sealing, filling and insulation in a single product.
- Helps reduce heat loss and improve building efficiency.
- Provides acoustic benefits by reducing sound transmission.
- Fast curing for improved productivity on site.
- Excellent dimensional stability with minimal post-expansion.
- Versatile solution suitable for a wide range of building applications.
- Professional-grade performance trusted by trade users.
- Compatible with most standard construction substrates.
Buy Soudafoam Gap Filler Online with Fast UK Delivery
At Sealants4All, we supply professional-grade construction products trusted by tradespeople across the UK. As an official distributor of leading building material brands, we provide genuine products, competitive pricing and dependable customer service.
Whether you’re sealing service penetrations, filling construction gaps or improving insulation performance, Soudafoam Gap Filler offers a practical and cost-effective solution. Order today and benefit from fast UK delivery direct to your home, workshop or job site.
Buy now from Sealants4All for genuine products, expert support and fast nationwide delivery.
Frequently Asked Questions
What is Soudafoam Gap Filler used for?
Soudafoam Gap Filler is designed to fill, seal and insulate gaps, cavities and penetrations in construction projects. It is commonly used around windows, doors, pipework and roof structures. The foam expands after application to create an effective seal while improving thermal and acoustic performance.
Can it be used on most building materials?
Yes, the foam adheres well to most common construction substrates including masonry, concrete, brick, timber and many metals. However, it may not bond effectively to certain plastics such as polyethylene, polypropylene and PTFE. Testing is always recommended where substrate compatibility is uncertain.
Is Soudafoam Gap Filler suitable for outdoor use?
Yes, it can be used externally for sealing and filling applications. However, cured polyurethane foam is not UV resistant and should be protected from direct sunlight. Covering with paint, sealant or a suitable building material will help ensure long-term durability.
How much should I fill a gap when applying the foam?
The foam expands during curing, so gaps should generally be filled to around one-third of their depth. This allows room for expansion and helps prevent overfilling. For larger cavities, multiple layers may be required for the best results.
Why buy Soudafoam Gap Filler from Sealants4All?
Sealants4All is a trusted UK supplier of professional construction materials and part of All4Construction Limited. We supply genuine products from leading manufacturers and offer fast, reliable UK delivery. Our experienced team understands the needs of tradespeople and DIY users alike.
Buy online – fast UK delivery.
