can it be applied by brush?

Yes, this product can be applied by brush or spray but must be second coated before the first coat has dried in. So larger areas need to be broken down into smaller areas if brush applied.

Can this be used on a brick fireplace indoors please?

I can't see why not. I've only used it on the inside of a garage wall a concrete floor & rendering all of which have been successful. It can stain though so be careful of drips.

Can i use this on a slate roof? a roofer has said the slates are become porous, so it sounds ideal, but someone has said no in the q and a - why?

Hi. Unfortunately this is only intended as a water seal for wall applications and slate isn't porous enough for the 402 to soak in to create an efficient seal.

Can this be used to seal polished plaster ?

I would not have thought so as polished plaster has a none porous outer layer which would not let the water seal seep into!

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Everbuild 402 Water Seal – High Performance – Long Lasting Protection From Water Damage – Solvent-Free Formula – Water Repellant – 5 Litre

Everbuild 402 Water Seal – High Performance – Long Lasting Protection From Water Damage – Solvent-Free Formula – Water Repellant – 5 Litre

Product ID: 49471027

Details

Brand
Sika
Item dimensions L x W x H
18 x 20 x 24
Item weight
11.02 Pounds
Material
Silicone
Style
Single

💧5L solvent-free water-based formula

🏗️Multi-surface protection: brick, stone, concrete

🛡️Durable waterproof & breathable coating

AR$301027

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Description

💧 Seal in protection, seal out worry — waterproof your world with Everbuild 402!

GENEROUS 5 L CAPACITY - Enough coverage to tackle large projects or multiple touch-ups, ensuring your space stays pristine.
ECO SMART SOLVENT FREE - Protect your home and the planet with a non-toxic, water-based formula that’s safe and sustainable.
LONG LASTING WATER DEFENSE - Shield your surfaces with a breathable, solvent-free barrier that keeps water out without trapping moisture.
VERSATILE SURFACE CHAMPION - Perfectly engineered for brick, stone, plaster, and concrete—one sealant to rule them all.
TRUSTED BY PROS DI YERS ALIKE - Join thousands who rate it 4.4 stars for reliable, high-performance water repellency.

Everbuild 402 Water Seal is a 5-litre, solvent-free, water-based silicone formula designed to create a durable, breathable waterproof coating. Ideal for protecting brick, stone, plaster, and concrete surfaces from water damage, it offers long-lasting, eco-friendly protection trusted by thousands of users.

Specifications

ASIN	B0012LETNK
Best Sellers Rank	1,652 in DIY & Tools ( See Top 100 in DIY & Tools ) 44 in Sealers
Brand	Sika
Colour	Clear
Compatible Material	Brick, stone, plaster, concrete
Country Of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (5,481)
Global Trade Identification Number	05029347004255
Item Dimensions	18 x 20 x 24 centimetres
Item Form	Liquid
Item Weight	11.02 Pounds
Manufacturer	Sika Everbuild
Manufacturer Contact Information	Sika Everbuild 41 Knowsthorpe Way, Leeds LS9 0SW
Manufacturer Part Number	XWAT5LAB
Material	Silicone
Model Number	XWAT5LAB
Number of Items	1
Number of Packs	1
Style Name	Single
Surface Recommendation	Wall, floor, roof
UPC	764210982531
Unit Count	5000.0 millilitre
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.

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AR$301027

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Argentina.

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TrustScore 4.5 | 7,300+ reviews

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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