Comparing Schlegel’s Aquamac Q-lon Weatherseal to Deventer’s Weatherseal and answering your questions.

We get many joinery companies ask us which weatherseal is best for timber doors and windows between Aquamac Q-lon and Deventer. See for yourself the differences and benefits below. Don’t worry if you currently use the Aquamac Q-lon range of weatherseal – it’s quick and easy to switch to the Deventer Weatherseal range and we list below the Deventer weatherseal which directly replaces the Aquamac Q-lon weatherseal.

Schlegel’s Aquamac Q-lon and Deventer’s Weatherseal are both stock ranges for us. As we are the Main UK Distributor for Deventer it also means we have an excellent range available from stock for next-day delivery.

Will Deventer Weatherseal or Aquamac Q-lon provide the best compression for my doors and windows?

• Deventer Weatherseal will offer a much lower compression. This ensures the weatherseal works well in conjunction with the hardware, making the lock and handle much easier to operate. It also gives the homeowner a more comfortable feel when opening/closing their door/window.
• Aquamac Q-lon Weatherseal requires a much higher compression for the weatherseal to be effective. This makes it much harder to close and operate handle and lock.

Winner: Deventer Weatherseal

Which weatherseal is easier and quicker to install - Deventer Weatherseal or Aquamac Q-lon?

• Deventer Weatherseal is designed with a rigid back and a ‘universal foot’ to ensure quick mounting of the seal into the groove. It also removes a machining process helping to save valuable time during production.
• Aquamac Q-lon Weatherseal does not have the rigid back and the foot can be difficult to push into the groove as there is no flexibility on tolerance. It also requires an additional machining process making it take longer overall to install.

Winner: Deventer Weatherseal

Which weatherseal is more durable and will help improve the performance of my doors and windows?

• Deventer Weatherseal is made from high-grade TPE closed cell foam which cannot tear easily, and which does not stretch or absorb water.
• Aquamac Q-lon Weatherseal is made from a polyurethane foam core with a polyethylene film outer layer. This outer layer can become torn, exposing the inner foam core allowing water to be absorbed into the seal. This in turn leads to the gasket to fail and encourages mould to grow in the corners of the rebates.

Winner: Deventer Weatherseal

Try Deventer Weatherseal for yourself for free – request your 6m sample roll pack by completing the form below:

Deventer’s Weatherseal and Schlegel’s Aquamac Q-lon Weatherseal both fit into the same groove so it is easy to switch from one manufacturer to the other. Below we show some of the common seals and their equivalent in each range.

Schlegel’s Aquamac Q-lon QL3091 (AQ124) can be replaced with Deventer SPV124 or SPV12, 15 or 18 Compression Weatherseal:

Schlegel’s Aquamac Q-lon QL3009 (AQ21) can be replaced with Deventer SP5717 Wiping or Compression Weatherseal:

Schlegel’s Aquamac Q-lon QL3011 (AQ109) can be replaced with Deventer SPV6009 Wiping or Compression Weatherseal:

Schlegel’s Aquamac Q-lon QL3005 (AQ63) can be replaced with Deventer SP63 Offset Compression Weatherseal:

If you would like to discuss Deventer’s Weatherseal or Schlegel’s Aquamac Q-lon Weatherseal in more detail, please contact us on sales@coastal-group.com or call 01726 871 025 where we'll be happy to help and advise.