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Decorating tools & supplies
Sealants

Exterior Sealants

No matter what your latest outdoor project is, we've got a huge variety of exterior sealants to finish off the job. Whether you're making repairs, sealing a new patio, or making sure window frames are weathertight, we've got an outdoor mastic sealant or liquid sealant for you.

No matter what your latest outdoor project is, we've got a huge variety of exterior sealants to finish off the job. Whether you're making repairs, sealing a new patio, or making sure window frames are weathertight, we've got an outdoor mastic sealant or liquid sealant for you.

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Exterior

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- Cartridge gun(1)
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- 1 hour Click & Collect(3)
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White sealants
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56 products

Compare

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Waterproof Sealing Tape (5cm x5m Roll)
1 star
(2)
£9.99£19.98 per kg
Sponsored
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Great low price
Hemway Hybrid Polymer Sealant & Adhesive Crystal Clear Waterproof Anti Mould Shower Bath Kitchen Bathroom All-In-One - 1 Pack
£12.95£43.17 per L
Sponsored
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Great low price
Hemway Hybrid Polymer Sealant & Adhesive Light Grey Waterproof Anti Mould Shower Bath Construction All-In-One - 1 Pack
£11.95£39.83 per L
Sponsored
Available for Home Delivery
Not available for Click + Collect
Not available in stores
162 people bought this in 48 hours
Soudal Ready to use All-weather Solvent-based Sealant, 290ml
4.2 stars
(5)
162 people bought this in 48 hours
£9.00£31.03 per l
Available for Home Delivery
Available for Click + Collect
Available in selected stores
No Nonsense White Frame Sealant, 462g
4.91 stars
(12)
£6.16£19.87 per l
Available for Home Delivery
Available for Click + Collect
Available in selected stores
50 people bought this in 48 hours
UniBond Outdoor Window & Door Silicone-based Brown Frame Sealant, 392g
4.23 stars
(13)
50 people bought this in 48 hours
£11.00£28.06 per kg
Available for Home Delivery
Available for Click + Collect
Available in selected stores
Dowsil 796 External PVCu Silicone Sealant 310ml Cartridge - Anthracite
£14.22£88.88 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Dowsil 791 External Weatherproofing Silicone Sealant 310ml Cartridge - Bronze
£14.37£89.81 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Geocel Marine Silicone Rubber Sealant 310ml Cartridge - Black
£14.25£89.06 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Geocel 201 Polymer Mastic Sealant (Polysulphide) 380ml Cartridge - White
£11.92£74.50 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Geocel Trade Mate All Weather 310ml Cartridge - Clear
£8.74£54.63 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Dowsil 791 External Weatherproofing Silicone Sealant 600ml - Black
£27.48£171.75 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Geocel Trade Mate Fire Block 310ml Cartridge - Black
£7.21£45.06 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Geocel Contractor General Purpose Silicone 300ml Cartridge - Clear
£8.42£52.63 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Geocel Top Gun Multi Purpose C3 Silicone 310ml Cartridge - Clear
£9.98£62.38 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Geocel 201 Polymer Mastic Sealant (Polysulphide) 380ml Cartridge - Grey
£11.92£74.50 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Dowsil 796 External PVCu Silicone Sealant 310ml Cartridge - Grey
£14.22£88.88 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Britannia Paints Block Paving Sealer Clear 5 litres - Protects & Enhances Patios & Pathways
£33.00£6.60 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Dowsil 796 External PVCu Silicone Sealant 310ml Cartridge - Black
£14.22£88.88 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Geocel Contractor General Purpose Silicone 300ml Cartridge - Brown
£8.42£52.63 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Geocel Top Gun Multi Purpose C3 Silicone 310ml Cartridge - White
£9.98£62.38 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Geocel Trade Mate All Weather 310ml Cartridge - White
£8.74£54.63 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Dowsil 784 Mildew Resistant Glazing Silicone Sealant 310ml Cartridge - Black
£12.94£80.88 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Dowsil 791 External Weatherproofing Silicone Sealant 310ml Cartridge - Buff
£14.37£89.81 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Dowsil 791 Weatherproofing Silicone Sealant 310ml Cartridge - Anthracite
£14.37£89.81 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Geocel Top Gun Multi Purpose C3 Silicone 310ml Cartridge - Black
£9.98£62.38 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores
Dowsil 781 Multi-Use Acetoxy Silicone Sealant 310ml Cartridge - Grey
£14.85£92.81 per L
Available for Home Delivery
Not available for Click + Collect
Not available in stores

Showing 27 of 56 products

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