Expanding Foam 300 ML
Expanding Foam 300 ML is ideal for sealing gaps, filling cavities, and improving insulation in construction and home improvement projects. Easy to apply with strong expansion and long-lasting performance. We ship Australia-wide.
$16.48 Exc GST
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Description
The Crack and Hole Filler is a high-quality repair compound designed for filling cracks, holes, dents, and surface imperfections quickly and effectively. Formulated for smooth application and strong adhesion, it helps restore damaged surfaces with a clean and professional finish.
Its easy-to-use formula dries quickly and can be sanded or painted after application, making it ideal for repair and maintenance work. Suitable for wood, walls, furniture, laminate, plywood, and interior surfaces, it provides durable and long-lasting repair results.
Perfect for carpenters, furniture installers, contractors, and DIY users.
Key Features:
- Effective crack and hole repair solution
- Smooth and easy application
- Fast-drying durable formula
- Can be sanded and painted after drying
- Strong adhesion on multiple surfaces
Product Specifications Table
| Specification | Details |
| Volume | 300ml |
| Cure Time | Tack-free ~10 min, full cure ~12 hrs |
| Expansion Rate | Up to 30–50× |
| Application Temp | +5°C to +35°C |
| Adhesion | Timber, masonry, concrete, metal, PVC |
| Finish | Paintable and sandable when cured |
| Standards | Suitable for general construction use |
Advantages of Using This Product
- Seals air leaks instantly, improving your home’s energy efficiency
- Waterproof when cured — great for sealing around pipe penetrations
- Single-component formula — no mixing required, just shake and spray
- Bonds to nearly all common building materials
Product Best Uses
- Sealing gaps around window and door frames
- Filling cavities around plumbing and electrical penetrations
- Insulating and draught-proofing roof and wall cavities
- Bonding and filling in construction and renovation projects
Frequently Asked Questions (FAQs)
1. How much area does a 300ml can cover?
Coverage depends on gap size, but a 300ml can typically fills 10–15 linear metres of a 10mm gap. For larger cavities, you may need multiple cans.
2. Can expanding foam be painted over?
Yes! Once fully cured (allow at least 12 hours), you can trim, sand, and paint it with most water or solvent-based paints.
3. Is expanding foam waterproof?
A: When cured, it is water-resistant but not fully waterproof under sustained pressure. For submerged applications, use a silicone sealant instead.

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