Thistle's undercoat plaster is a gypsum-based, internal basecoat that's used to build up the desired thickness of plaster. It prepares walls and ceilings prior to skim finishing and is also ideal for smaller patching repairs or filling chases. It's suitable to use on a range of surfaces including brick, block, plaster, tiling or low-suction backgrounds.
You'll find this mix is quite fine, so it spreads and smooths out like a dream, making it easy to rule and darby. Because it's gritty, it'll provide you with a mechanical key for skimming. When used in conjunction with Thistle Finishing Plaster or Gyproc EasiFill, you'll get a smooth, high-quality surface to internal walls and ceilings that's durable and resistant to knocks. It can easily be painted over too, so there's no extra step needed before you can complete your decorating task.
• Ideal for smaller patching repairs or filling chases
• Use on brick, block, plaster and plasterboard
• Fine mix is easy to smooth and spread
• Finish with Thistle Finishing Plaster or Gyproc EasiFill
• Covers 0.8 m²

Delivery (UK mainland only)

 

Next Day: £5, or FREE over £40

- Order by 9pm Mon-Thu: next working day

- Order Fri to 5pm Sun: Monday

- Order after 5pm Sun: Tuesday

 

Pre-12pm: £10

- Same cut-offs as Next Day above

 

Saturday & Sunday: £10, or £5 over £40, or FREE over £75

- Saturday: order by 6pm Fri

- Sunday: order by 4pm Sat

 

Heavy items (over 30kg)

- Mon-Fri only. Order by 6pm and allow up to two working days

- Order after 6pm Thu: arrives after the weekend

 

Supplier items

- Sent directly by the supplier, so timings vary. Lead times appear on the product page in working days (Mon-Fri)

 

More about delivery 

Next Business Day Collection (eligible items)

- Order by 9pm Mon-Thu: collect next day

- Order after 9pm Thu to 5pm Sun: collect Monday

- Heavy items (over 30kg): allow up to two working days

 

Opening hours

- Weekdays vary by branch: open 6:30am-7am, close 6pm-8pm

- Saturday: 7am-6pm

- Sunday: 9am-4pm

 

Check your local store's hours and that it's open before visiting. Please wait for our text or email before collecting.

 

Holding your order
We'll hold it for 14 days, then automatically refund your original payment method.