KNICKER Polyurethane Foam PU Foam Sealant Spray

Description

KNICKER Polyurethane Foam PU Foam Sealant Spray

Product Description: KNICKER Polyurethane Foam PU Foam Sealant Spray

Tackle insulation, sealing, and fixing tasks with precision and power using Knicker Polyurethane Foam (PU Foam) Sealant Spray. This professional-grade, one-component expanding foam is engineered to provide exceptional adhesion, thermal insulation, and airtight sealing for a vast range of construction and renovation projects. Upon application, Knicker PU Foam Sealant expands to many times its original volume, filling irregular cavities, gaps around window and door frames, and holes in walls with ease.

It cures to form a rigid, yet lightweight, closed-cell foam that effectively blocks drafts, reduces noise transmission, and improves energy efficiency. Available in convenient handheld cans for small jobs and professional gun-grade cartridges for larger projects, Knicker PU Foam Sealant Spray is an indispensable tool for builders, installers, and DIYers seeking a reliable, high-performance solution for filling and fixing.

How Does Polyurethane Foam Work and What Are Its Key Uses?
Knicker PU Foam Sealant is a chemical product dispensed as a liquid prepolymer. When it contacts atmospheric moisture, it begins to expand and cure into a solid foam. Its primary functions are:
– Air Sealing: Creating airtight seals around window and door installations to prevent heat loss and drafts.
– Gap Filling: Filling large, irregular voids around pipes, conduits, and in wall constructions.

– Insulation: Adding thermal and acoustic insulation value in cavities.
– Fixing & Bonding: Securing and insulating panels, such as insulating boards to walls, due to its strong adhesive properties.
– Fire Stopping :Special fire-rated versions (B2/C) are available for compartmentalizing fire spread in accordance with building regulations.

What is the Difference Between Gun Grade and Handheld Foam?
Knicker offers two application formats to suit every user:
– Gun Grade Foam (Professional): Sold in larger cylinders (750ml) designed for use with a reusable foam application gun. It offers superior control, less waste, the ability to stop and start instantly, and is ideal for multiple or large jobs. The gun allows for precise, clean application even in awkward positions.

– Handheld Foam (DIY): Sold in disposable cans with a attached plastic straw. It is perfect for one-off, small projects where purchasing a gun isn’t justified. It offers good results but with less control and a higher chance of clogging.
For frequent use, the Knicker Gun Grade PU Foam with a dedicated applicator gun is highly recommended for its efficiency and cleaner results

How Do I Apply and Manage the Expansion?
Proper technique is crucial when using Knicker PU Foam Sealant to avoid over-expansion and mess.
1. Preparation: Shake the can vigorously for 30 seconds. Moisten the substrate with water—moisture accelerates curing and improves adhesion.

2. Application: For gun grade, attach the canister to a clean foam gun. For handheld, attach the provided straw. Apply the foam in a slow, steady motion, filling the gap to only 30-50% of its volume. The Knicker PU Foam will expand significantly to fill the remaining space.
3. Curing: Allow the foam to cure fully (typically 2-24 hours depending on humidity, temperature, and bead thickness). Do not disturb it during this time.
4. Trimming: Once fully cured, excess foam can be easily trimmed flush with a sharp utility knife or saw.

What Safety Precautions Are Essential?
Knicker PU Foam Sealant contains chemicals that require careful handling:
– Ventilation: Always use in a well-ventilated area.
– Protection: Wear protective gloves, safety goggles, and old clothing. Uncured foam is extremely sticky and difficult to remove from skin, hair, or fabrics.

– Fire Hazard: The propellant is highly flammable. Keep away from open flames, sparks, and heat sources during and after application until fully cured.
– Curing Fumes: Avoid prolonged inhalation of vapors during application and the initial curing phase.

Is the Foam Paintable and Water Resistant?
Yes, once fully cured, Knicker Polyurethane Foam is both paintable and water-resistant. The cured foam can be painted with most water-based or solvent-based paints, allowing for a seamless finish. Its closed-cell structure makes it an effective moisture barrier, preventing water ingress.

However, it is not a substitute for proper waterproofing membranes in areas of constant water exposure. For long-term outdoor exposure, the cured foam should be protected from direct UV rays with paint or sealant, as sunlight can degrade it over time.

The KNICKER Polyurethane Foam PU Foam Sealant Spray is available in Mombasa, Kwale, Kilifi, Lamu, Mandera, Marsabit, Isiolo, Meru, Embu, Kitui, Machakos, Makueni, Nyandarua,

Nyeri, Kirinyaga, Murang’a, Kiambu, Turkana, Samburu, Trans Nzoia, Uasin, Gishu, Elgeyo Marakwet, Nandi, Baringo,

Laikipia, Nakuru, Narok, Kajiado, Kericho, Bomet, Kakamega, Vihiga, Bungoma, Busia, Siaya, Kisumu, Homa Bay, Migori, Kisii, Nyamira, Nairobi.

In Nairobi you can find them at: Westlands, Dagoretti,  Lang’ata, Starehe, Kamukunji, Embakasi, and Kasarani, Kibera, Mathare,

Eastleigh, Karen, Lavington, Westlands, Parklands, Runda, South C, South, Ngong Road

In Mombasa you can find us at : Nyali, Mwembe Tayari, Majengo, Likoni ,Bamburi, Miritini