Do you have questions about products and systems, prices or building physics and statics? Your construction project raises a number of questions, and you're not alone!
At Gutex, we've been setting the standard for environmentally-friendly insulation since 1932 - a long time during which we've already received many different questions. We've compiled the most frequently asked questions for you here - and with a bit of luck, the answer you're looking for is already here!
The websiteGutex Ultrathermand GutexTop multiplexSub-roofing panels meet the requirements of temporary roofing from a roof pitch of 15° up to an RDN of less than 8° and up to three higher requirements without additional gluing or film covering. The panels belong to technical class UDP-A according to ZVDH.
The websiteGutex UltrathermandGutex Multiplex-topSub-roofing panels can be exposed to the elements for up to three months.
You will find the ingredients on the various product pages under "Description & Benefits" and in the technical data sheets available there under "Technical documents & Brochures".
When insulating above the rafters with our sub-roofing panels, the following distances between the rafters must be observed:
| Product | Panel thickness [mm] | Max. length Rafter centre distance [cm] |
|---|---|---|
| Gutex Multiplex-top | 22 | 85 |
| 35 | 100 | |
| Gutex Ultratherm | 50/60 | 110 |
| 80/100/120/140/160 | 125 | |
| Gutex Multitherm | ≥ 60 | 90 |
Thinner board thicknesses or small quantities of flexible wood fibre insulation blanket Gutex Thermoflex you can use a Knife for insulating materials for larger quantities, we recommend an electric insulation saw with a corrugated blade, such as Festool's cordless insulation saw or Bosch's Alligator.
Construction examples for insulating the upper floor ceiling can be found in theOnline catalogue of detailed drawingsas well as in the Detailed Drawings Catalogue.
In timber-frame construction, you assemble the Gutex Thermowall/-gf/NF/ Duriodirectly onto the wooden studs or onto any existing facing in the wooden studs. On flat wooden substrates such as solid wood walls, fit the plaster support panel directly. For fixing, useGutex ThermowallWood screws or wide-backed stainless steel staples. On mineral substrates, Gutex plaster base plates must always be glued and doweled, for example usingGutex bonding and levelling compoundas well as Gutex WDVS thermal screw anchors. For more information, consult the brochure"Gutex Thermowall WDVS - implementation.
For an enclosed facade, you need the following on the Gutex Multitherm in the case of open-joint formwork, we recommend using a UV-resistant, waterproof facade sheet.
You can use wood fibre insulation board Gutex Multitherm as an external cladding on framed constructions, solid wood elements or masonry. Fasten the insulation panel immediately with the ventilation batten. Use your fastener manufacturer's sizing service to size the fasteners to suit the object.
You'll find this information in Downloads-Homologations.
Under-roof sheetsGutex UltrathermandGutex Multiplex-topcan be freely exposed to the elements for three months.
Under-roof sheetsGutex UltrathermandGutex Multiplex-topfor roof pitches of 15° and above, meet the requirements of temporary roofing up to an undercut of the RDN of 8° and up to three additional requirements without gluing or covering with additional film. The panels are assigned to technical class UDP-A in accordance with ZVDH.
Fasten sub-roofing panels up to 60 mm thick with nails and staples that are at least galvanised: see also the technical data sheets.Gutex UltrathermandGutex Multiplex-topfrom a panel thickness of 80 mm upwards, you must fasten the underroof panels with approved screws. You will find the forms for dimensioning the fasteners herehere.
The distances to chimneys, flues or flue gas ducts are governed by the Fireplace Ordinances of the Länder (FeuV), § 8. The distance to combustible building materials is mainly determined by the type of flue and the temperature of the flue gas. If the flue gas temperature of the fireplaces does not exceed 160 °C at rated output, a distance of 5 cm is often sufficient. If you have any questions about the Fireplace Ordinance (FeuVo) of your Land, please contact the district chimney sweep responsible. The earlier you incorporate the Fireplace Ordinance into the planning of a new build or renovation, the easier it will be to implement.
When insulating above the rafters with our sub-roofing panels, the following distances between the rafters must be observed:
| Product | Panel thickness [mm] | Max. length Rafter centre distance [cm] |
|---|---|---|
| Gutex Multiplex-top | 22 | 85 |
| 35 | 100 | |
| Gutex Ultratherm | 50/60 | 110 |
| 80/100/120/140/160 | 125 | |
| Gutex Multitherm | ≥ 60 | 90 |
The Tecadio roof renovation system consists of a rainproof underlay panel, moisture-regulating compartment insulation and a tested airtight membrane. Construction examples with U-value calculations can be found in the brochure"Gutex Tecadio roof renovation system - installationin theOnline catalogue of detailed drawingsin theCatalogue of detailed drawingsin the brochure"Construction proposals.
Construction examples with U-value calculations for internal roof renovation can be found in the brochure"Construction proposalsin theOnline catalogue of detailed drawingsas well as in theCatalogue of detailed drawings.
Construction examples with U-value calculations for on-roof insulation can be found in the brochure"Construction proposalsin theOnline catalogue of detailed drawingsas well as in theCatalogue of detailed drawings.
Construction examples with U-value calculations for insulation between rafters can be found in the brochure"Construction proposalsin theOnline catalogue of detailed drawingsas well as in theCatalogue of detailed drawings.
Plaster support panelsGutex Thermowall/-gf /NF/Duriocan be exposed to the weather for four weeks after application, before the rendering system has to be applied. Depending on the object, however, the weathering time can be extended by up to five months by taking additional measures. You can find more information on this subject in the brochure"Gutex Thermowall WDVS - implementation.
You can find more information on this subject in the brochure"Gutex Thermowall WDVS - implementation.
In timber-frame construction, you assemble theGutex Thermowall/-gf/NF/Duriodirectly onto the wooden studs or onto any existing facing in the wooden studs. On flat wooden substrates such as solid wood walls, fit the plaster support panel directly. For fixing, useGutex ThermowallWood screws or stainless steel wide-back staples. On mineral substrates, Gutex plaster base plates must always be bonded and doweled, for example using Gutex bonding and plastering compound and Gutex WDVS thermal screw dowels. For further information, please refer to the brochure"Gutex Thermowall WDVS - implementation.
In timber construction, the minimum penetration depth is
Plaster support panelsGutex Thermowall/-gf/NF/must in principle be glued and doweled. One of the two fixings is not enough. Do not insert the dowels until the gluing has hardened.
The maximum distances to be observed for wooden studs, staples and screws when installing theThermowall WDVSyou will find below:
Maximum dimensions of the axes of the wooden uprights :
| Small format plates : | ||
|---|---|---|
| Gutex Thermowall | from 80 mm | 62.5 cm (panel length 1300 mm) |
| Gutex Thermowall-gf | from 40 mm | 62.5 cm |
| Gutex Thermowall-gf | 60 mm | 83.3 cm (panel length 1800 mm only) |
| Gutex Thermowall NF | 60 mm | 62.5 cm |
| Gutex Thermowall Durio | 70 mm | 75.0 cm |
| Gutex Thermowall-L | from 120 cm | 62.5 cm (on the facing) |
| Large format panels (edge-to-edge) | ||
|---|---|---|
| Gutex Thermowall-gf | from 40 mm | 62.5 cm |
| Gutex Thermowall | from 80 mm | 62.5 cm |
Maximum distances between staples and screws: please also refer to the wind load table in the brochure."Gutex Thermowall WDVS - implementation.
| Distance between ribs [mm] | Minimum number part Fixing per rib and plate Panel width (600 mm) | Reliable maximum vertical spacing of fasteners [mm] | |||
|---|---|---|---|---|---|
| Wind pressure W in accordance with DIN 1055-4 [kN/m²] | -1,00 | -1,00 | -1,60 | -1,00 | -1,60 |
| Gutex Thermowall wood screws | 625 | 3 | 4 | B ≤ 250 | B ≤ 150 |
| 833*** | 3 | 5 | B ≤ 250 | B ≤ 150 | |
| Wide stainless steel backpacks | ≤ 521 | 5 | A ≤ 125 | ||
| 625 | 6 | A ≤ 100 | |||
| ≤ 729** | 7 | A ≤ 85 | |||
| 833*** | 8 | A ≤ 75 | |||
** 750 mm modular dimension only withGutex Thermowall Durio600 x 1800 x 70 mm
*** Modular dimension 833 mm only withGutex Thermowall-gf600 x 1800 x 60 mm
Please stop whenThermowall WDVSand also observe the wind load table in the brochure."Gutex Thermowall WDVS - implementation.
| Wind pressure W in accordance with DIN 1055-4 [kN/m²] | - 1,00 | - 1,60 | |
| Minimum number of Gutex Thermowall wood screws for single-layer installation | 6 | 10 | |
| Minimum number of wide-back staples for single-layer installation Gutex Thermowall-gf | 16 | 125 mm (maximum reliable vertical distance from fixings) |
Secure the first layer using at least fourGutex Thermowallwood screws or at least eight wide-backed staples per square metre. The second layer should only be applied withGutex ThermowallFix with wood screws, observing the minimum number per square metre given in the table. Fixing in the panel joints is not permitted in the second layer. For the necessary edge distances of the fixing means, the technical construction provisions introduced by the building supervision apply.
| Wind pressure W in accordance with DIN 1055-4 [kN/m²] | - 0,77 | - 1,00 | - 1,60 |
| Minimum number of Gutex Thermowall wood screws for double-layer installation of Gutex Thermowall wall on Gutex Thermosafe-homogen | 4 | 5 | 8 |
Please stop whenThermowall WDVSand also observe the wind load table in the brochure."Gutex Thermowall WDVS - implementation.
| Wind pressure W in accordance with DIN 1055-4 [kN/m²] | - 0,55 | - 1,00 | - 1,60 |
| Gutex WDVS Thermal screw-in pad or Thermal knock-in pad | 6 | 8 | 10 |
You can use the plaster support panel Gutex Thermowall please note the following construction details:
For more information on fixing, see the brochure"Gutex Thermowall WDVS - implementation.
Use as cellar ceiling insulation :
It is essential to observe the penetration depths specific to the fixing product!
You can use wood fibre insulation board Gutex Multitherm as an external cladding on frame constructions, solid wood elements or masonry. Fasten the insulation panel immediately with the ventilation batten. To size the fastening to suit the object, use the Sizing service from your fastener manufacturer.
For an enclosed facade, you need the following on the Gutex Multitherm in the case of open-joint formwork, we recommend using a UV-resistant, waterproof facade sheet.
You'll find this information in Downloads-Homologations.
On the website Online catalogue of detailed drawings in principle, you must comply with the directives of the Thermowall WDVS approved as well as, for example, standards DIN 68800 and DIN 18195.
You are welcome to sit inside on the Gutex Thermoroom apply a rendering system to your own specifications, provided the rendering manufacturer allows it " Downloads; Brochures, leaflets, forms; Leaflet cooperation " a multitude of possible rendering structures on Gutex Thermoroom.
Gutex has a large number of fire-stop structures tested for constructions with fire resistances of F30-F90 (REI 30-REI 90) for walls, roofs, floors and ceilings that you can here to find out more, consult the brochure "Construction proposals" (PDF).
Gutex has a large number of fire-stop structures tested for constructions with fire resistances of F30-F90 (REI 30-REI 90) for walls, roofs, floors and ceilings that you can here to find out more, consult the brochure "Construction proposals(PDF).
U-value calculations for roof structures, external and internal walls, floors and ceilings can be found in the brochure "Construction proposals(PDF), in the Online catalogue of detailed drawings as well as Catalogue of detailed drawings.
The term ‘airtight’ or ‘airtightness’ is used in DIN 4108-7:2011-01 and defined as the property of a building material, building component [...] of a building not to be penetrated by air or to be penetrated only to a limited extent. The airtightness layer (usually applied on the room side) prevents air from flowing through the building element (convection). This layer is usually combined with the function of an anti-diffusion layer. ‘Windproof’ or ‘wind impermeability’ describes the level of protection provided to the insulation in the building component against the passage of cold outside air. The operating principle of any insulation is based on the inclusion of air in the insulating material, which is why the ideal case is insulation that is closed on all sides.
If you are a processor, you will find the recommended prices (net) of systems and accessories from resellers in our price list. To find out about the terms and conditions of our products (wood fibre insulation boards, batts and blown-in insulation), please contact your local distributor Gutex commercial partners You can also purchase our range of products via our online shop.
If you're a builder, and you buy our products and systems through our specialist partners, we'll be happy to put you in touch with a local processor who can provide you with an individual quotation for your construction or insulation projects. Use our Contact form!
If you would like to process our products yourself, you can buy them from a Gutex commercial partners buy near you.
If you are a wholesaler, please contact your External service contact to find out more about our offer, services and conditions, click here.
This is a manufacturing process for wood-fibre insulation. To find out how it works, see Production & Logistics.
We produce our insulation solutions at the company's headquarters in Waldshut-Tiengen and at our second production site in Eschbach en Brisgau. Find out more About us!
Construction examples for insulating the upper floor ceiling can be found in the Online catalogue of detailed drawings as well as in the Catalogue of detailed drawings.
Please note the following maximum installation heights, depending on the product: Gutex Thermosafe-wd (here on the product) :
| Coating on Gutex Thermosafe-wd | Max. height Construction height Gutex Thermosafe-wd |
|---|---|
| Wet screed | 140 mm |
| Mastic asphalt | 140 mm |
| Particleboard ≥ 25 mm | 140 mm |
| OSB panel ≥ 22 mm | 140 mm |
| Gutex Thermosafe-nf | 100 mm |
| Dry screed element ≥ 25 mm | 100 mm |
| Finished parquet ≥ 14 mm | 30 mm |
| Laminate ≥ 8 mm | 20 mm |
| Coating on Gutex Thermofloor | Max. thickness Gutex Thermofloor |
|---|---|
| Wet screed (cement, anhydrite, etc.) | 60 mm (2 x 31/30 mm) |
| Mastic asphalt | 60 mm (2 x 31/30 mm) |
| Particleboard ≥ 25 mm | 30 mm (1x 31/30 mm) |
| OSB panel ≥ 22 mm | 30 mm (1 x 31/30 mm) |
| Dry screed element ≥ 25 mm | 20 mm (1 x 21/20 mm) |
Gutex Thermosafe-nf (here to the product): For higher insulation structures under Gutex Thermosafe-nf use the Gutex Thermosafe-wd up to max. 100 mm
Gutex Thermofibre is an insulation system that uses wood fibre blown into the compartments using a blower and pipes, making it flexible and independent of format.
Gutex Thermoflex is flexible wood-fibre insulation in board form, suitable for use between rafters and in latticework.
With both types of insulation, you benefit from the high moisture regulation and vapour diffusion properties of wood fibre insulation.
Thinner board thicknesses or small quantities of flexible wood fibre insulation blanket Gutex Thermoflex can be cut with a knife for insulating materials.
For larger quantities, we recommend an electric insulation saw with a corrugated blade, such as Festool's cordless insulation saw or Bosch's Alligator.
You will find the ingredients on the various product pages under "Description & Benefits" as well as in the technical data sheets available there under "Technical documents & Brochures".
Our wood-fibre board insulation is produced in accordance with DIN EN 13 171 and is CE marked on the basis of the declaration of performance. The calculation of thermal conductivity (design values) is governed by DIN 4108-4. A general technical approval with Ü marking is not required.
Blown-in insulation Gutex Thermofibre is approved with a European Technical Assessment (ETA), for which a Declaration of Performance is issued and marked with the CE mark.
At Gutex, our motto is: together, for each other. Help us improve and help others who are looking for the same information as you. We look forward to hearing from you!
