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How to fit coving and why use it

Posted by admin
March 24th, 2013

How to fit coving and why use it

Coving or cornice is very popular, it comes in a wide range of styles, sizes and made from a variety of materials such as plaster or polystyrene. A lot of you may have coving in your house, it helps break up the hard edge between the wall and ceiling and gives a nice aesthetic decorative look. You may have a plain concave coving or something more fancy such as egg and dart or Swag and Bow.

How to fit coving

To fit your chosen coving you will need the appropriate cove adhesive, this maybe a lightweight coving adhesive or a powder ‘mix your own’ adhesive for heavier paper faced plaster coving or just plaster coving. You will also need to cut mitres in each or the internal and external corners, it is easier if you use a mitre block or mitre tool that the coving manufacturer make.

Mark the ceiling and wall as described in the instructions as your guide lines, where the lines go will depend on the size of coving. You will need to measure the length of the wall and cut the coving and mitres accordingly, do this around the room until you have all the lengths cut, now mix enough adhesive up (if you need too) to fix a couple of lengths of coving as the adhesive will harden fairly quickly and be unworkable.

Apply adhesive to both edges of the back of the coving noting which is the wall and ceiling edge, this will be printed on the back of the coving. Once the adhesive is applied, push the length into place. Push the coving fairly hard to squeeze out the adhesive so it has a good bond to wall and ceiling. Use a scraper to remove the excess adhesive and a paint brush or sponge to wipe down the face of the coving.

Use adhesive to fill in joints and mitres, continue with the coving in this way until you are done. Leave the coving to dry overnight and then lightly rub down the joints and mitres, then apply 3-4 coats of emulsion to get a good coverage.

Why fit coving

Coving is primarily used in modern homes as a decorative item but it does cover up the nasty looking crack you often get between the ceiling and wall line, this crack is caused my movement in the house, nothing to worry about it is perfectly natural. The house expands and contracts as it gets hot and cold, the crack is caused by the movement of the two.

Coving can also add a nice soft edge rather than a hard edge and make a room look softer and more welcoming. If you are thinking of decorating a room, why not consider adding some coving.

Rooms with low ceilings suit smaller coving such as a 90mm but high ceiling rooms can go for 127mm or larger.
For a list of types of profiles and a little more information about coving, take a look at Wikipedia.

For more in-depth instructions on fitting coving, take a look at the article I wrote on our DIY By Design blog about how to fit coving.

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How to paint new plasterwork

Posted by admin
April 7th, 2012

Painting new plaster

When you have had either walls or ceilings plastered or skimmed over with plaster you need to know how to paint them correctly to get a long lasting finish.

Firstly ensure they are dry, this will depend on what plastering you have had done. One thing not to do, start painting colour samples on bare plaster, due to the brushes that come with the samples and how thick you apply the sample you will see this on your walls forever unless you rub them down, best to paint on some lining paper or plain white paper, you can then move it around the room and see the colour in different lights. There is a previous post about this Colour samples and testers.

To Paint new plasterwork

Firstly get some sandpaper, not too course, as you don’t want to ruin the new plaster, around 120 grit and lightly rub over the plaster to remove any splashed plaster or drips of dirty water. Then brush the area down to remove any loose dust.

Next, you may well think it’s simply a case of deciding on a colour and painting over the new plaster? STOP!
You should never paint new plaster with a vinyl emulsion as this will sit on top of the plaster leaving a skin or layer that could peel off. You should always paint new plaster with a ‘New Plaster Sealer’ or a non-vinyl emulsion.

I use a non-vinyl emulsion and is my preferred method. I use a matt emulsion, typically white to seal the plasterwork before using a vinyl emulsion colour over the top to complete the job. The ‘New Plaster Sealer’ or a non-vinyl emulsion will soak into the new plasterwork and the finish coats you apply will adhere to this first ‘mist’ coat.

You don’t have to worry about covering the plaster totally, you just need to give it a ‘mist’ coat (as it’s known) to seal the plaster, you’re not looking for complete coverage and opacity.

Once you have mist coated your new plaster you can now apply your choice of finish coat and colour.

Paint Calculator

You may find my paint calculator useful to help work out the quantity of paint you require to mist coat your new plaster and also for your final finish coat. One thing to note, new plaster can be absorbent so slightly more paint maybe required than normal to get a good depth of colour and a good finish.

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