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 daily cut-off time for dispatch is 4:30pm Monday–Thursday and 4:00pm on Fridays. Orders placed before the cut-off time will be dispatched for next working day delivery (if this option is selected). Orders placed after 4:00pm on Friday will be dispatched on Monday for Tuesday delivery.
Bank holidays may affect these delivery times, so please contact our team if unsure on 01268 744479
Other Delivery Options
PRE-10:30AM and Saturday Delivery services are available, but orders must be placed before the relevant cut-off times.
NOTE: All orders placed on a Friday will be delivered on the following Monday (unless its a bank holiday), unless a Saturday Delivery service is selected and paid for before the 4:00pm Friday cut-off.
Delivery outside the UK
Delivery outside mainland UK may be arranged by prior agreement. You will be advised of the delivery charge before dispatch, at which point you can decide whether you wish to proceed with 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 0800 023 4203 or 01268 744 479.
