Square MDF Pre-Primed Architrave 18 x 69 x 5490mm
Square Edge MDF skirting or architrave is a contemporary profile widely used in apartments or modern housing developments, but has also started to make an appearance in some period properties, favoured for its simplicity and low maintenance.
Square MDF Pre-Primed Architrave (18mm x 69mm x 5490mm) is a clean, modern interior trim designed to frame internal doorways and window openings, effectively bridging and concealing the gap between plasterwork and the underlying timber frame.
Primary Uses & Key Features
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Contemporary Door & Window Framing: Delivers a sharp, ultra-minimalist border around door linings and window cills, ideal for modern, industrial, and Scandinavian-inspired interiors.
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Seamless Flush Fit with Skirting: The $18\text{mm}$ thickness matches standard $18\text{mm}$ square-edge skirting boards, creating a neat, perfectly flush floor-to-frame junction without needing plinth blocks.
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Super-Long 5.49m Length: The $5490\text{mm}$ board provides ample length to yield both vertical legs ($2.1\text{m}$) and the top header ($1\text{m}$) for a standard single door casing from a single piece, significantly reducing material waste.
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Pre-Primed Surface Finish: Arrives factory-coated with a smooth white primer, eliminating the time-consuming step of knotting or priming raw timber and offering an ideal surface for a quick final coat of satin, gloss, or eggshell paint.
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Moisture-Resistant MDF Core: Machined from high-density MR-MDF, guaranteeing a completely straight, knot-free trim that will not twist, cup, split, or warp over time.
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Available for collection from our Rugby branch or local delivery using our own fleet.
Delivery is kerbside and the final offloading position is always subject to safe access and the driver’s discretion.
Please tell us before delivery about:
• Narrow roads or restricted entrances
• Parked vehicles or limited turning space
• Overhead cables, trees or other obstructions
• Soft, sloping or unsuitable ground
• Any other access concernsEnter your postcode on the product page to check your delivery area. We’ll confirm the delivery date after your order is placed.
How do you join Square architrave at the top corners of a door frame?
Square architrave can be joined using a standard 45-degree mitre joint or a straightforward 90-degree butt joint. A butt joint (where the top header sits flat on top of the vertical side legs) gives a distinct, modern industrial look and is extremely quick to cut.
Why choose a Square architrave over a decorative profile?
The sharp, unadorned edges create flat, clean lines that complement modern architectural designs. With no grooves or curved details, it does not collect dust and can be wiped clean effortlessly.
How do you prevent sharp corners on Square architrave from chipping during installation?
Handle the long lengths carefully to avoid knocking the squared edges against door frames or tools. When cutting, support the board fully on the saw bench and use a high-tooth-count blade (60+ teeth) to keep the outer primed corners crisp and intact.
What is the best way to fill joints and fixing holes on Square architrave?
Sink nail heads slightly below the surface using a nail set. Fill the pin holes and corner joints with a fine-surface interior MDF filler, let it dry, sand it completely flush with fine 240-grit sandpaper, and spot-prime the filler before applying your topcoat.
How do you seal the bottom end of Square architrave where it meets the floor?
Before fixing the architrave, seal the cut bottom end with a thin coat of wood primer or PVA glue. This prevents the exposed MDF core from drawing up moisture from wet flooring, damp subfloors, or floor cleaning mops.
