Custom non-combustible heat shield deflector for existing fireplace mantle beams

Non-Combustible Heat Resistant Shield Deflector Plate – DIY Kit (shield, spacers and screws only)
 
Bring your wooden mantel closer to your stove or fireplace safely with this high-quality heat shield deflector plate. Ideal for wood burners, inset stoves, open fires, mantelpiece stoves, kitchen chimney hoods, and more. Compliant with current UK building regulations, it allows timber beams to be positioned lower without compromising safety.
 
Why Choose This Heat Shield:
 
•Can be positioned as close as 15 cm from the heat source, much nearer than unshielded beams.
•Low heat conduction keeps the wood top cool or just warm.
•Perfect for retrofitting a mantel when installing a new stove, or mounting a TV above your stove.
•Supplied with 12 mm spacers, screws, and easy-to-follow instructions.
•Fully insured delivery with online tracking.
•Available in custom sizes to suit your space.
 
 
Custom Lengths:
700 mm up to 2000mm
 
Custom Width
75mm to 250mm
 
Thickness:
3 mm (contact us for thicker/deeper options)
 
Customisation:
Select your preferred length and depth from the dropdown menu, then add specifications in the personalisation box.
 
Materials Included:
Black heat-grade steel shield
Black 12 mm spacers for airflow
Black screws
 
 
 
Placement Guidance (UK Building Regulations):
Ideally cover the full underside of your mantel.
Inset/cassette stoves: Minimum 30 cm from the heat source (can reduce to 25 cm if appliance manufacturer guidance allows).
Wood burner flues: Minimum 1.5× flue diameter. Example: 4 inch flue = 15 cm clearance; 5 inch flue = 19 cm clearance.
Comparison: Unshielded mantels require 45 cm+ clearance or 3× flue diameter. Shielded versions allow ~50 % reduction.
 
Want a slightly thicker or deeper shield? Contact us for a quote.
 
Safety Note: Always follow your stove or appliance manufacturer’s guidance for safe clearances.
 
Custom non-combustible heat shield deflector for existing fireplace mantle beams