SOFTAYO · BUYING GUIDE
How to measure a window for a cut-to-fit blackout cover
Plan the sheet, overlap and fastening surface before cutting your portable window cover.
Measure the opening and the fixing area
Measure the full area you want to cover, noting width and height separately. Check where the fasteners can attach. Measuring only the glass can leave gaps around the edges: plan the overlap and fixing arrangement too. Handles, hinges, sloping surfaces and nearby vents can affect placement.
Plan the 145 × 300 cm sheet before cutting
The Softayo kit contains one 145 × 300 cm sheet. Compare both orientations against your measurements and sketch the cut on paper first. Do not assume one sheet will cover several windows: each piece uses material, and offcuts may not suit another opening. The kit includes a measuring tape; take a second reading before marking the fabric.
Check the fixing surface
The kit includes 32 pairs of adhesive-backed hook-and-loop dots. Choose a suitable, sound surface and test a small area first. Delicate or flaking paint may be unsuitable. If you rent, check the requirements for your property before attaching adhesive. Removing the fabric separates the fastener faces; it does not remove the adhesive dots.
Look for edge gaps before the final cut
Where practical, hold the uncut sheet in the proposed position and check for uncovered edges. The result depends on fit, overlap and gaps. This model is not offered with a measured blackout percentage or verified heat or noise reduction. Product images do not establish how your particular window will perform.
Check the contents and returns
One sheet, 32 pairs of dots, a measuring tape and a carry bag are included. Cutting is not reversible. Change-of-mind returns require the kit to be unused and uncut. Read the delivery and returns details before ordering, particularly if you need the kit for a particular date.
View the portable blackout kit →
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Prepared by Softayo · 1 November 2026. Based on the current listed product and use information, not an independent performance test.