How do you apply? After oiling or before? How do you smooth it for finish?

Application before oiling is preferred otherwise Bona Gap Master may not stick to surface. Smoothing can be done after application with a wet trowel, a wet sponge, or even a wet finger.. For application on oiled or pre-lacquered surface, slightly sand the areas where the sealant has to be applied.

can this be used on stick down Vinyl floor tiles? attempting camper van conversion and few joints separated over night.

Good Morning, Interesting question, it is designed for use on wood or wall substrates, however it may work for your vinyl floor tiles, I could give no guarantees. I would have to recommend a test area first to check for adhesion to the flooring.

Is this suitable for outdoor use? Also one reviewer said chart is out of sync. I need a light oak any suggestions?

Hi The Bona Gapmaster is designed for use around wooden floors and internal trims. The product is UV stable so will not break down due to exposure to sunlight. That said it is designed for internal usage and does not come with the anti-fungal properties that products designed for damp/wet areas would have. We will be uploading a better chart for colours and request Amazon to add to this listing.

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Bona Gap Master Filler - Black - 310ml

Product ID: 88111540

Details

Brand
Bona
Item form
Paste
Material
Polyacrylate
Special feature
Silicone-free
Specific uses for product
Craft

⏳18-24h drying time

📏6m coverage per tube

🖤sleek black finish

R1216

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🖤 Seal the deal with Bona’s sleek, flexible gap master!

SAFE ODORLESS - Solvent-free and odorless formula keeps your space fresh and healthy
FLEXIBLE DURABLE - 7% elasticity ensures lasting crack resistance and adaptability
SMOOTH FINISH READY - Sands and overcoats easily for a professional-grade look
PRECISION GAP FILLING - Seamlessly fills gaps from 3mm to 12mm for flawless interiors
WATER REPELLENT SILICONE FREE - Protects wood surfaces without compromising material integrity

Bona Gap Master Filler is a high-viscosity, acrylic-based black mastic designed for interior gap sealing around wood joinery. Offering up to 6 linear metres coverage per 310ml tube, it fills gaps between 3mm and 12mm with 7% elasticity, dries in 18-24 hours, and can be sanded and painted over. Its solvent-free, odorless, and water-repellent formula ensures a clean, durable finish ideal for professional-quality home improvements.

Specifications

ASIN	B00D1UZK42
Best Sellers Rank	37,742 in DIY & Tools ( See Top 100 in DIY & Tools ) 50 in Wood Glue
Brand	Bona
Colour	Black
Compatible Material	Wood
Container Type	Bottle
Country Of Origin	United Kingdom
Customer Reviews	4.5 4.5 out of 5 stars (102)
Full Cure Time	24 Hours
Global Trade Identification Number	09003119000689, 09003119020038
Item Form	Paste
Item Package Quantity	1
Item Volume	310 Millilitres
Item Weight	2.2 Pounds
Manufacturer	Bona
Manufacturer Part Number	AF4411312000
Material	Polyacrylate
Model Number	AF4411312000
Number of Pieces	1
Other Special Features of the Product	Silicone-free
Specific Uses For Product	Craft
Unit Count	310 millilitre
Viscosity Level	High
Water Resistance Level	Water Repellent

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

3 weeks ago

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