OVER SILL WHITE 2.5m 140mm DEPTH

Once a wall is wrapped in insulation and rendered, the original window sill no longer reaches past the new surface. The Over Sill White 2.5m 140mm Depth is a white extension that sits over the old sill and takes the sill line back out beyond the render. It is the second of four white depths in the oversill range, 140 mm deep and sold in 2.5 m lengths.

Four Reasons to Pick the White 140 mm Depth

• A white edge for white frames. The window line and the white verge trim at the top of the wall stay in one colour.
• Room either way. 110 mm sits below this depth and 170 and 220 mm above it, so the white range still has an answer once the site figures are in.
• Cut to each opening. Every piece is 2.5 m long and is trimmed on site to the width of the sill.
• Ends closed in white. The white end cap pair finishes both ends of a sill.

Over Sill White 2.5m 140mm Depth: Shape and Size

Also called an oversill or an external sill extension, the profile is a flat sill board with a short upstand along the back edge and a front edge folded down. The white product photo shows that shape with a cap on each end, and the same photo serves all four white depths.

Depth Guide: White and Anthracite

Each depth comes in both colours: read across from your depth to the colour of your frames.

Checking 140 mm Against Your Wall

The depth is chosen from the wall itself rather than from the drawing. Before ordering, take two figures at every window:

• the thickness of insulation plus render that will finish around the opening;
• the distance the existing sill now projects from the wall face.

Phone the counter on 023 8200 2442 with both, and the depth is agreed with you first. Where the windows along one elevation differ, each one is checked on its own figures.

Lengths and End Caps per Sill

Work the lengths out from the width of each sill: divide by 2.5 m and round up.

• A 2.0 m sill: one length, cut to size.
• A 5.5 m sill: 5.5 ÷ 2.5 = 2.2, so three lengths.
• Caps: one white pair per sill with two open ends, whatever its width.

Where a sill runs over more than one length, settle the joint with the counter before the order goes in.

Matching White Trims

• White verge trim with upstand — the profile for the top edge of the wall.
• White end cap pair — closes a sill or a verge run in the same colour.
• Every depth in both colours — in the depth guide above.

White or Anthracite at 140 mm

The frames settle it. White frames take this sill with the white verge trim and white caps. For dark frames, the anthracite 140 mm over sill in the depth guide has the same depth and comes with its own anthracite cap pair.

Fitting Guides

The Renders World installation guides take the work on from here:

• How to install window sill extensions — measuring, cutting and capping the sill.
• Render detailing around windows and doors — where the sill, beads and render meet at the reveal.

Ordering, Delivery and Returns

• Dispatch — orders are processed the same day when the stock is there; add the caps to the same basket as the sills.
• Delivery — the team quotes it after the order; parcels up to 25 kg travel next day and are delivered kerbside.
• Collection — the counter at Unit 9A, Central Trading Estate, Southampton SO14 5JP, Monday to Friday 7am to 5pm and Saturday 7am to 12pm.
• Returns — 14 days in original condition for goods bought directly from Renders World; special orders and promotion purchases are excluded.

FAQ