How to install Polyurethane/Polystyrene Covings

One of the key advantages of polyurethane/polystyrene covings is how easy they are to install. Here are some key tips to remember to make your coving installation project trouble free.

PREPARATION OF SURFACES

Ensure the areas you are fixing the covings to are dust free and dry. If applying to freshly plastered walls and ceilings, please make sure these are completely dry as because the majority of adhesives are water-based (Eurocoll Plus included) they will not adhere to a damp surface.

TOOLS, ADHESIVES & FILLERS

You will need the following tools:

A fine-toothed saw, mastic gun, measuring tape, pencil, putty knife, damp sponge mitre box.

Make sure the mitre box you choose is large enough for the covings you have chosen to fit into it. If you are not confident enough to cut the corner angles yourself, there are coving profiles available with pre-cut internal and external corners. The Leggero and Linea range from Coving Direct both have corners available.

You will need an adhesive to fix the covings to the wall and ceiling and a caulk to fill in any gaps, trust me there will be gaps! Our Eurocoll Plus brand is a two in one adhesive and caulk and is all you will need for covings in the Leggero and Linea range.

For the Classic range of polyurethane coving, you will also need a joint adhesive (Joint Fix) to be applied at the ends where one length of coving meets another, and even at corners, this prevents cracking at the joints.

PUTTING UP THE COVINGS

There is no such thing as a perfectly straight wall or ceiling. There will always be bumps and troughs and coving tend to show up these little imperfections.

The trick to disguising these is to make sure the bottom edge of your covings runs straight along the wall. Never mind the gaps at the top where it meets the ceiling when these are filled with caulk and painted you don’t notice them as the eye will always be drawn to the straight line where the coving meets the wall. Just keep that bottom edge straight!

When everything is ready put a length of your coving up to the ceiling/wall and make a series of marks with a pencil where the bottom edge is on the wall. These marks will act as a guide to keep that bottom line straight.

Apply a line of adhesive to the top and bottom edge of the coving profile and also to the end. Introduce the covings to the wall/ ceiling making sure to keep it level with the pencil mark. Put light pressure all along the 2-meter length of coving and hold in place for approximately 10-15 seconds. The adhesive should grab after this. For heavier mouldings we recommend putting in a few carpentry tacks along the length (top & bottom) until the adhesive goes off completely (usually 9-10 hours) These can then be removed and the pinhole filled with caulk. Clean off any excess adhesive and caulk using a putty knife and damp sponge. Continue this process along the entire perimeter of the room.

CORNERS

This is the one area in which customers find can be a little tricky. The problem most people have is not knowing the correct way to position the covings in the mitre box to achieve the correct cut for each side of the corner. It is difficult to explain the correct method verbally, and I believe the old saying “a picture tells a thousand words” is most appropriate here! So below links to a simple graphic PDF showing exactly how to position the covings in the mitre box.

Alternatively, if you have one, you can use a Chop saw, or Compound Mitre saw to make the cuts.

FINISHING AND PAINTING

Once everything is installed, it is time to paint. Ideally leave everything in place overnight to let the adhesives bond and cure fully. All the covings will accept all types of paint, but generally, people will use whatever they are putting on the ceiling. Covings in the Classic range come pre-primed, ready for the final coat. I recommend using a primer for the Leggero and Linea style ranges. The only tip I would offer for painting is to use a quality paint. There is no point in buying 10 litres of watered down budget paint. It just costs you time as more coats need to be applied to get anywhere near the same finish.

Leave a Reply