Delivery 1 - 5 x working days*
Under £100 - From £5.99*
Over £100 - From FREE*

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All prices are including VAT
Welcome to www.sealantsonline.co.uk - mastic sealants from County Construction Chemicals
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LARGEST UK STOCKS OF MASTIC SEALANTS

An online service from County Construction Chemicals Ltd. county construction chemicals ltd logoEstablished in the joint sealing business for well over 40 years, we're proud to introduce a selection of our finest coloured mastic joint sealants, adhesives, specialist build & repair, waterproofing materials, tools and accessories. When ordering mastics and sealant products, waterproofing, wood or concrete build and repair materials, mastic caulking guns and equipment with us through this website, you'll be dealing with a highly experienced and trusted business with our own London stores, ready to deliver all over the UK with a fast and reliable timespan.

Please Note; We're sometimes known as County Mastics.  

County Construction Chemicals Ltd
We sell Mastic Sealants, Adhesives, Tapes, Waterproofing Materials, Wood Repair, Fire Protection, Tools, Equipment  & More - Online

We're not just another faceless internet company!

You can speak to our specialist sealants sales team
on: 020 8524 1931 - 8:30am - 5pm Monday-Friday 

We're based in Chingford, North-East London & ship to the UK, Ireland & Channel Islands only.

Distributors & suppliers of: coloured, mastic joint sealants / adhesivesconcrete - wood build & repair / fire protection materials / mastic sealant guns /  tools & accessories




ARE YOU LOOKING FOR CT1 Mastic Sealant Adhesive?
We are an APPROVED C-Tec distributor for CT1, Power Grab N Bond & Multisolve

Great price breaks for CT1 ct1 mastic sealant adhesive logo
Click here to buy CT1 mastic sealant adhesive

If you want CT1 Sealant Adhesive in any large quantities (i.e. over 10 x boxes) in any of the following colours: CT1 Clear Sealant / CT1 Black Sealant / CT1 Grey / CT1 Blue / CT1 Silver / CT1 White
Ring our sales team on: 020 8524 1931


We stock silicone and many other types of sealants in a huge range of colours from Dow Corning Geocel, Otto-Chemie's coloured Ottoseal range, polysulphide mastic sealants by Fosroc, polyurethane and silicones from Sika, epoxy sealants by Adshead Ratcliffe Arbo, wood repair materials from both Repair Care International (via our company Windowcare Systems) and Timbabuild from Chemfix, Triton's Dri Cream damp proofing material, Tremco Illbruck adhesives, Nullifire london underground approved fire proof silicone, C-Tec Ct1, Protecta Polyseam aka ASF Air Sound Fire passive fire protection, Mapei grout, shower waterproofing and mould resistant mastics, the world's strongest mastic sealant caulking guns by Krøger MK Guns and many useful and relevant tools & accessories.
We sell coloured silicone and other sealants Mastic Sealant Calculator

For larger order enquiries, (such as 5 x boxes of sealants or pallet quantities etc.) please visit our main website: www.countyconchem.co.uk

DELIVERY*Under £100(inc. vat) = £5.99(inc. vat) / Over £100 (inc. vat) = Free

All orders usually delivered in
1-5 x working days
(9am-5pm weekdays)

Occasionally products will take slightly longer due to manufacture, you will notified if your order is likely to take longer than the 5 x working days stated. 




*Surcharges apply to Scotland / Ireland / Channel Islands

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Sealant colours charts gallery



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