Fixing plaster ceiling9/24/2023 ![]() The ceiling can now be redecorated Substantial damage repairĪs mentioned, for larger areas or more substantial damage, cut out the area back to the midpoint of the next joist and patch with plasterboard and blend in with a skim coat of finish plaster. Trowel this out over the damaged area so that it bonds completely with the old plaster and completely covers the lathes.Īllow the plaster to dry overnight before gently removing the timber supports below. Wet the area with clean water and a brush then make up a slightly sloppy batch of bonding plaster. Vacuum the area as well to remove as much dust as possible. For other ceilings, you will have to lift the floor in the room above to get access to the old lathes.Ĭlean away all the broken plaster from the area above and remove any other debris. For upstairs rooms, this is usually easy enough as you can get to it from the loft. You now need to access the top side of the ceiling. Place a large enough sheet of ply or similar material over the bulging area and wedge it back up with a sturdy length of timber from the floor below. Once the sagging area of lathe and plaster has been re-supported like this, the recesses for each screw can be filled and the ceiling redecorated Larger areas of sagging ceiling Dry lining screws will cut through easily and grip well in the joists. ![]() The washers will prevent the screw pulling right through the plaster and can be sunk a fraction into the surface. Use dry lining screws with large washers on them. Mark the line of the ceiling joists above and screw the plaster to these. Using a wide board long enough to span the bulge, prop the ceiling back up using a length of sturdy timber spanning from the floor below. Tongue and groove cladding can be used or special PVC cladding that is designed for use i. I will be the first to admit that I may not be the biggest fan of textured ceilings. This can be repaired by firstly propping the sagged area back into place using boards and props. Battening a ceiling is often required if the ceiling is to be clad. Have water damaged textured ceilings or need to patch a hole Almost every wall develops flaws at some point, but you can perfectly repair a textured ceiling with these tips and step by step instructions. Once damaged, the plaster below no longer has as much support from the lathes and can easily drop a little causing a bulge in the ceiling Small bulges in lathe and plaster Ceiling repairs can be very tricky, and plastering ceilings is a. This can get broken – most commonly in attics when work like boarding is carried out. There is no better way to improve the appearance of your rooms than to redo the ceiling. As it dried this will have formed a bond holding the plaster in place. ![]() The plaster will have been trowelled onto the lathes so that it squeezed through the gaps and formed nibs. If you look at the top side of a lathe and plaster ceiling you’ll see the lathes spanning across the joists. Small areas can be repaired but larger areas are best cut out and replaced with plasterboard and then skimmed with finish plaster. This will help with the drying process whilst avoiding the plaster cracking.In older properties, lathe and plaster ceilings can become damaged and the bond between the old lathes and the plaster gets broken. You can put the heating on, however, we recommend you keep this at a low temperature for a number of days after the plastering is completed. The best condition for allowing your newly plastered walls/ceiling to dry is to provide some ventilation by opening a couple of windows slightly. Excessive heat will cause the plaster to dry too quickly which may result in cracking or hazing. It can be tempting to turn the heating right up to speed up the drying process but this is not recommended. Another factor that will affect the drying time for your plastering work is the room temperature and ventilation. If there has been significant filling it could take as long as two weeks for the plaster to be thoroughly dry and ready for painting and decorating. This means that certain areas may be thicker than others and therefore require more time for the plaster to thoroughly dry out. If there are any areas that require additional work, for example, if there is a void, a large crack, or a gap which requires filling then a base coat or bonding plaster may be required before skimming. The thickness of the plastering will affect the time it takes for the plaster to dry out. Generally, it will take around 3-5 days for plastering to dry out however there are a few factors that will affect the drying time of your plaster.
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