Gorter has its own support team for many countries. The Gorter support team in the Netherlands will help you with requests for quotations, questions about specifications and installation options, order processing and aftercare. We shall be happy to assist you. Take a look at the top right of the web page for all contact options.
At Gorter, we understand that as an architect, you will want to specify a reliable, safe roof hatch certified to the latest standards. A product that has demonstrably proved itself, both in practice and by stringent criteria, and that fits neatly into your design.
With Gorter, you have the right product specifications, Autocad drawings and documentation on-line so that you can produce your design and tender documents with ease. You can find more information under the architects menu item.
In addition to a roof hatch that is of suitable quality and easy to install, you will, of course, be looking for a great price. You will receive a competitive offer within a few minutes through the “Ask for a quotation” function on our website.
Gorter roof hatches in standard sizes are available from our stock. This means that delivery will usually take 3 to 4 working days and less than 24 hours with the express delivery option.
Gorter has its own engineering department with which products in special dimensions or versions can also be quickly designed and realized.
Gorter has its own roof hatch service centre. We help contractors on site, provide support for larger projects and carry out any repairs required. Call our service centre on +31 (0)224 21 98 60
Gorter roof hatches are very economical ... and at Gorter you get even more. The roof hatch has a unique patented, thermally broken construction which not only gives you a better interior climate but also saves on energy costs. Gorter also gives you more in terms of safety. The roof hatches are certified by TÜV NORD, KOMO® and Aboma, so you can always be assured that roof access is safe. In addition, installation is simple and inexpensive as the entire structure is preassembled and light-weight.
It is also important to remember that all Gorter roof hatches – as proof of quality – are supplied with a 10-year warranty. If you want quality at an attractive price, choose a Gorter roof hatch.
Product innovation and product quality are central to Gorter's activities. Where many suppliers follow and copy, Gorter is constantly developing new functionalities and improvements for roof access. With Gorter you can be sure of roof access that meets the very latest requirements and also makes use of the latest technologies... and all this at a very attractive price.
With our own development department, product innovation is just one of the priorities within the organisation. The development department has therefore also paved the way for the patented explosion release control, the fully thermally broken roof hatch construction, the luminous hand rail and the GS55 self-adjusting fixed staircase.
Innovation based on user experience is very important within the entire innovation policy. This also looks at operating safety, ease of installation, durability, the environment and simplicity of operation.
Due to the increasingly stringent requirements imposed on construction products, Gorter roof hatches recently underwent Soft Body Impact testing. In those tests, the largest roof hatches of the RHT type were subjected to, among other things, impact resistance testing according to EN 13049 Class 5 and the falling ball test according to EN 356 Class P5A. This confirms that the performance of all roof hatches in the RHT Series complies with the above EN standards.
Due to the increasingly stringent requirements imposed on construction products, Gorter roof hatches recently underwent Soft Body Impact testing. In those tests, the largest roof hatches of the RHT type were subjected to, among other things, impact resistance testing according to EN 13049 Class 5 and the falling ball test according to EN 356 Class P5A. This confirms that the performance of all roof hatches in the RHT Series complies with the above EN standards.
The general load capacity of the roof hatches is 1,050 kg/m² (according to EN 1993-1-1).
Gorter RHT, RHTEP and RHTG roof hatches are supplied with a European Technical Assessment (ETA-15/0338 and ETA-18/0287), undisputed confirmation of proven performance, and an associated CE mark.
With the introduction of ETAs linked to the CE mark, suppliers of manufactured items should issue an official declaration about the performance and key features of the products. In doing so, tests and declarations/certifications from recognised testing institutes should serve as evidence.
The European Technical Assessment (ETA) is a document that contains information on the performance of a manufactured product as it relates to the essential features of that product. Gorter roof hatch products are also covered by a European Assessment Document (EAD). The ETA for Gorter roof hatches is issued by the Dutch “Technical Assessment Body”, the SKG-IKOB.
The ETA is valid in all 28 European member states and the states of the European Economic Area, as well as Switzerland and Turkey.
If you want to be sure of a good insulation value, then choose a Gorter roof hatch. In addition to a unique, fully thermally broken construction, the roof hatches have an insulation value of: Uw ≤ 0.319 W/(m².K) as evidenced by EuroSolid. Gorter is the only roof hatch supplier that has had the insulation value officially confirmed by EuroSolid where the performance of the roof hatch has been tested to EN ISO 10077-2 standard.
The unique insulating properties of the roof hatch are obtained by combining a special design with the right materials. The patented design (Patent no. 2519072) of the thermally broken construction and double sealing around the cover ensure a highly effective thermal barrier. This will ensure that during severe winter conditions, or if the roof hatch is used in very cold regions, no icing or condensation will occur on the inside of the roof hatch.
Better insulation not only helps reduce heating costs, but also reduces unwanted draughts in the room beneath. The room will feel cosier and you will no longer experience the discomfort of draughts.
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