Choose the right draught-proofing for each opening
There are various types of draught-proofing materials, each suitable for specific gaps and situations. The effectiveness and lifespan depend greatly on choosing and applying the correct product.
Draught Seals: Sealing gaps in window and door frames
Draught seals are self-adhesive strips placed in the rebates of windows and doors. They are available in different profiles, each designed to seal gaps of a certain width. The correct profile ensures optimal sealing and prevents the strip from interfering with the door or window's functionality.
Overview of draught seal profiles and their applications
Profile |
Gap Width |
Material |
Lifespan |
I-profile |
1-3, 2-4, 3-6 mm |
PVC foam |
2-3 years |
E-profile |
2-3.5 mm |
EPDM, PVC foam |
5-8 years |
P-profile |
3-5 mm |
EPDM |
5-8 years |
V-profile |
0.5-8 mm |
EPDM, plastic |
5-8 years |
D-profile |
4-6 mm |
EPDM |
8 years |
O-profile |
1-7 mm |
Silicone |
8+ years |
Draught Excluders: For doors and larger openings
While draught seals are mainly for frames, draught excluders are a solution for the bottom of doors and larger openings. They are more robust and come in several types:
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Draught excluders with brush: These are typically made of aluminium or plastic with soft brush bristles. They are attached to the underside of the door and sweep over the floor or threshold. Suitable for interior doors and block out dust and drafts without damaging the floor.
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Draught excluders with rubber lip: These versions have a flexible rubber lip that fits tightly against the threshold or floor when the door is closed. They are versatile for both internal and external doors, offering effective sealing against moisture and cold.
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Automatic drop seals: These mechanisms are built into the door and lower a sealing profile when the door is closed. They offer a discrete and effective solution for sealing the gap under the door, without visible elements when the door is open. Suitable for soundproofing and smoke sealing.
Additional solutions against draughts
Apart from doors and windows, there are more places where draughts can be unwanted. Specific products provide solutions for these areas:
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Letterbox brushes: A simple but effective solution to block cold air entering through the letterbox. These are mounted on the inside of the door.
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Draught snakes (door rolls): A temporary or additional solution for large gaps under interior doors. This roll, often filled with foam, is slid under the door to block the draught. Suitable for smooth floors.
Correctly applying draught-proofing
Installing draught-proofing materials is often a job that an experienced DIYer can handle. A few points of attention contribute to a good result:
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Determine the location: Find draughty areas by moving a flame (candle) or a damp hand along the edges of windows and doors. Also check ventilation grilles that don't close properly or wall penetrations.
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Preparation: A clean, grease-free and dry surface is important for the adhesion of self-adhesive draught seals and strips.
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Precise measuring and cutting: Carefully measure the required length and cut the material to size. For brush or rubber strips, saw on the correct side to keep the functional parts intact.
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Correct installation: Follow the manufacturer's instructions. For self-adhesive products: remove the protective film and press firmly. For strips that are screwed or nailed: ensure a stable attachment.
Sustainability and savings with draught-proofing
Draught-proofing is an investment that pays for itself. By sealing gaps and cracks, you reduce the need for heating, leading to lower energy consumption and noticeable savings on heating costs. It also contributes to a more comfortable and quieter home. Depending on the size of the openings to be sealed and your home type, annual energy savings can be significant. Products vary in durability; regular checks and replacement when needed ensure lasting results.