The Fastwarm Acrylic-Based Primer is a moisture-tolerant, water-based primer designed to enhance adhesion and provide a stable base for underfloor heating installations. Suitable for both porous and non-porous surfaces, it ensures optimal bonding of adhesives or levelling compounds for a durable, efficient heating system.
- Enhanced Adhesion- Improves the bond between substrate and subsequent layers, crucial for a stable heating system.
- Porosity Reduction- Seals the substrate to prevent air bubbles and prolongs levelling compound flow time for a smooth finish.
- Versatile Application- Works on various substrates including calcium sulphate screeds, plaster, timber, brick, and blockwork.
Application Tips: For porous surfaces, dilute the primer before application (first coat: 3 parts water to 1 part primer; second coat: 1:1). Allow each coat to dry fully before applying the next—typically 1–2 hours, depending on environmental conditions.
This primer is essential for preparing surfaces to ensure long-lasting, efficient underfloor heating installations.
Delivery Options
2-3 working day delivery
Next working day
Next working day before 10:30
Saturday Delivery
Delivery cut off times
Our final delivery time for Mondays to Thursday is 4:30pm. To give us a bit more time to ensure weekend deliveries are handled and our couriers have time to collect, the final delivery time on Fridays is 4:00pm.
Bank holidays may affect these delivery times, so please contact our team if unsure on 01268 744 479
Other Delivery Options
Pre 10:30am and Saturday delivery services are available on orders placed before 4:30pm. Any order placed before 4:30pm on a Friday will be delivered on the following Monday (unless its a bank holiday) so please select a Saturday service if a weekend delivery is required.
Delivery outside the UK
Delivery outside the mainland UK may be arranged by prior agreement. You will be notified of the amount of the charge for this service and will at that point have to make a decision whether you wish to proceed wth your order.
Important: Our deliveries rely on third party couriers, so, whilst we make every effort to deliver your order on the specified date and time, unfortunately there may be occasions when this will not be possible due to external influences. Due to this we strongly recommend you ensure you have received your order before any tradespeople/builders are scheduled to commence work.
Still Unsure? Talk to an expert
If you need any guidance or further information our highly experienced team are on hand to help.
Get in touch using our contact form or give us a call on 01268 744 479.
