How to Test Artex Ceilings for Asbestos Before Plastering

Why Plasterers and Electricians Ask for an Asbestos Certificate

Homeowners often assume that skimming over an old textured ceiling is completely non-invasive because the new plaster covers the old finish. In reality, before a plasterer can lay a flat coat of multi-finish over a heavy swirl, stipple, or broken-leather pattern, they almost always have to knock off the high peaks with a scraper or floor scraper blade.

That initial dry scraping — along with sanding down proud joints or an electrician running a hole-saw through the plasterboard for recessed LED downlights — turns a stable, low-risk coating into airborne dust. From the 1960s right through to the late 1990s, manufacturers added between 1% and 5% white asbestos (chrysotile) to textured coatings (commonly known by the brand name Artex) to make the mix bright, workable, and resistant to shrinkage cracks.

We inspect hundreds of ceilings across Hampshire every year, particularly in 1960s and 1970s planned developments in Basingstoke, Andover, and Havant where decorative textured coatings were applied throughout every room during original construction. Because tradespeople have a legal duty not to expose themselves or your household to asbestos fibres, reputable plasterers, kitchen fitters, and electricians will pause the job until they see a laboratory certificate confirming whether asbestos is present.

What Happens on the Day: How We Sample a Ceiling Safely

You do not need to move furniture out of the house or vacate the property while we sample a textured ceiling. We just need clear access below a couple of discrete spots in the room — usually near the corners or edges where a small repair patch will barely be noticed.

1

Controlled Wetting Down

We lay down a protective sheet, put on an FFP3 respirator, and mist the sampling point with a surfactant spray. This binds any dust so fibres cannot become airborne in your room.

2

Cross-Sectional Composite Extraction

Using a sharp blade, we carefully slice right through the paint layers and the full depth of the textured compound down to the grey plasterboard paper or skim beneath. We take pinches from two or three points across the ceiling to form a representative composite sample.

3

Immediate Sealing & Labelling

The sample goes straight into a sealed, double-bagged polythene pouch with a unique barcode reference. We seal the small scrape mark on your ceiling immediately with PVA or durable filler and wipe down our blade with wet wipes before moving to the next room.

Wait before testing just one room and assuming the rest of the house matches. If a kitchen extension was built in 1988 and the lounge ceiling was textured in 1974, they are two completely different batches and must be sampled separately. Similarly, if an old central heating pipe was boxed in or a ceiling repair patch was blended in later, we check both areas so your tradesperson does not hit a hidden surprise halfway through the job.

Once Results Come Back: Honest Advice on Skimming vs Removal

When the independent UKAS laboratory finishes examining the sample under polarised light microscopy, we email you a clear certificate stating either "No Asbestos Detected" or confirming the presence of asbestos (almost always chrysotile in Artex).