Question 1

1. What surfaces can coving glue be used on?

Accepted Answer

Coving adhesive is suitable for plaster, plasterboard, concrete, and painted surfaces. Always make sure the surface is dust-free and stable before application.

Question 2

2. What adhesive should you use for polystyrene coving?

Accepted Answer

Polystyrene coving adhesive is designed for lightweight profiles and usually contains less solvent to avoid dissolving the coving material. Avoid standard construction glues, which can damage foam-based mouldings.

Question 3

3. How long does coving adhesive take to dry?

Accepted Answer

Drying time depends on conditions and product type. Most adhesives allow 10–20 minutes for adjustment and set fully within 12–24 hours.

Question 4

4. How much coving adhesive do I need?

Accepted Answer

Usage varies by profile size and length. As a guide, a standard tub or bag covers around 5–8 lengths of coving, but always check manufacturer instructions.

Question 5

5. Do I need to use mechanical fixings as well as coving glue?

Accepted Answer

A quality coving adhesive is usually enough for standard installations, especially with lightweight materials. For large, heavy, or uneven surfaces, particularly with heavy plaster coving, trades often rest the moulding on panel pins or insert drywall screws until the adhesive has cured. Once the adhesive is fully set, these temporary fixings can be removed and the holes filled.

Question 6

6. Can I use plasterboard adhesive for coving?

Accepted Answer

Plasterboard adhesive can hold lightweight coving but is not always ideal. Reasons for this include:

Plasterboard adhesive shrinks more on curing and dries harder, reducing performance at joints and making finishing on coving more difficult.
Plasterboard glue may not appear as seamless as coving adhesive, which typically dries white and is over-paintable.
Drywall or board adhesive often doesn’t have the built-in filler or gap-bridging ability that coving glue has, making it less forgiving if joints aren’t perfect.

It’s best to use a specialist plaster coving adhesive or other product labelled for your coving type.

Question 7

7. How do you remove coving adhesive?

Accepted Answer

Scrape off softened adhesive using a filling knife. For stubborn residues, dampen with warm water or lightly sand once dry, taking care not to damage the surface.

Coving adhesive

Knauf Coving Adhesive 5kg

Siniat Cove Adhesive 12.5kg

Everbuild EVBCOVE Coving Adhesive & Joint Filler 290ml