Which Selleys product do you need for a roof or gutter, and how do you choose?

Every Selleys product the catalogue associates with roofing is a roof and gutter sealant — a product for stopping water getting in at a joint, a lap, a flashing or a split, rather than for rebuilding the roof itself. The choice between them comes down to two questions: how you want to apply it, and whether the surface is going to be dry when you get there.

That second question is the one that catches people out. A roof leak announces itself in the rain, which is exactly the moment most sealants cannot be applied. Two products in this range are described specifically for wet surfaces, and knowing which they are saves you a wasted trip up a ladder.

What this category covers

The product listing on the live Selleys roofing category page is loaded dynamically and could not be captured, so this page is built from the roof and gutter products the Selleys catalogue lists elsewhere. All of them sit under roofing silicone in the sealants range.

How to choose

By application method

Three of the five are cartridge or gun products applied as a bead. One, Roof & Gutter Spray Seal, is described as easy to apply and is the option to look at where getting a gun into position is the hard part of the job — a spray reaches areas a nozzle cannot.

By whether the surface is wet

This is the distinction that matters most on a roof. Selleys Storm Sealant is described as delivering an immediate waterproof seal on any building material, wet or dry, indoors or outdoors. Roof & Gutter Spray Seal is described as working on wet surfaces.

Those two are therefore the products to reach for when the leak is active. The others are conventional sealants and you should assume they want a clean, dry substrate unless their own product page says otherwise.

By chemistry

Roof & Gutter Speed Seal is described as a neutral (non-acid) 100% silicone offering superior adhesion and resistance to lifting. Neutral cure matters on a roof because roofing is largely metal — sheet, flashing, gutter, fixings — and a neutral cure silicone does not release acid onto those surfaces as it cures.

By whether it is a trade or general product

Pro Trade Roof & Gutter Silicone is described for general purpose roof and gutter and weather sealing where excellent adhesion and long-term reliability are required. Roof & Gutter Silicone is the general-range equivalent, described as providing a water-tight seal that resists cracking and shrinking.

The products in this range

• Selleys Roof & Gutter Silicone — keeps roofs and gutters leak-free with a water-tight seal that resists cracking and shrinking.
• Selleys Roof & Gutter Speed Seal — a neutral (non-acid) 100% silicone for repairing leaks in most forms of roofing and guttering, with superior adhesion and resistance to lifting.
• Selleys Roof & Gutter Spray Seal — a quick and easy fix for roof and gutter leaks, easy to apply and works on wet surfaces.
• Selleys Storm Sealant — delivers an immediate waterproof seal on any building material, wet or dry, indoors or outdoors.
• Selleys Pro Trade Roof & Gutter Silicone — general purpose roof, gutter and weather sealing where excellent adhesion and long-term reliability are required.

Common questions

Which one can I use while it is still raining?

Storm Sealant is described as giving an immediate waterproof seal on any building material, wet or dry, indoors or outdoors. Roof & Gutter Spray Seal is also described as working on wet surfaces.

What is the difference between Roof & Gutter Silicone and Roof & Gutter Speed Seal?

Speed Seal is specified as a neutral, non-acid 100% silicone with superior adhesion and resistance to lifting, aimed at repairing leaks in most forms of roofing and guttering. Roof & Gutter Silicone is described more generally as giving a water-tight seal that resists cracking and shrinking. Where the joint involves metal you are unsure of, the neutral cure product is the safer default.

Why does neutral cure matter on a roof?

Speed Seal's description makes the point that it is non-acid. Roof work is mostly metal, and a non-acid cure removes the risk of the sealant attacking the metal it is sealing against as it cures.

What is the difference between the Pro Trade product and the standard one?

Pro Trade Roof & Gutter Silicone is described for general purpose roof, gutter and weather sealing where excellent adhesion and long-term reliability are required. That framing points at trade and specification work rather than one-off household repairs.

Can I use a wet-area bathroom silicone on a gutter?

Nothing in the sources supports that. Wet area silicones are catalogued for bathrooms, kitchens and laundries under wet area silicone. Use a product from the roof and gutter range for roof work.

Where do I find the full roof and gutter range?

Under roofing silicone in the sealants category, which is where all five of the products above are listed.

Why does this page not show a full roofing range?

The listing on the live roofing category page is generated in the browser and was not captured in the source behind this page. The products above are the roof and gutter products the Selleys catalogue lists elsewhere.