INTELLO X
Roof retrofit from the outside
1. Fill the space between rafters
Completely fill the existing space between the rafters with insulation material. If the existing insulation can be easily compressed, select the next highest thickness for the new insulation layer and use this to compress the existing insulation. Existing and new insulation should only use rock or mineral wool.
1. Fill the space between rafters
Completely fill the existing space between the rafters with insulation material. If the existing insulation can be easily compressed, select the next highest thickness for the new insulation layer and use this to compress the existing insulation. Existing and new insulation should only use rock or mineral wool.
2. Roll out and staple the membrane
Install INTELLO X flat over the rafters and insulation, and fasten it using galvanised staples that are at least 10 mm (⅜″) wide by 8 mm (⁵⁄₁₆″) long in the overlap area in a manner that protects against moisture entry. If exposure to the elements is planned, staples installed in open areas of the membrane, at intervals of 10-15 cm (4″-6″) along the rafters, should be taped over.
Install the membrane leaving an additional 4 cm (1⅝″) overlap at adjacent building structures so that an airtight bond can be applied here subsequently.
2. Roll out and staple the membrane
Install INTELLO X flat over the rafters and insulation, and fasten it using galvanised staples that are at least 10 mm (⅜″) wide by 8 mm (⁵⁄₁₆″) long in the overlap area in a manner that protects against moisture entry. If exposure to the elements is planned, staples installed in open areas of the membrane, at intervals of 10-15 cm (4″-6″) along the rafters, should be taped over.
Install the membrane leaving an additional 4 cm (1⅝″) overlap at adjacent building structures so that an airtight bond can be applied here subsequently.
3. Tape the overlap
Clean the subsurface (dry and free of dust, silicone and grease) and carry out an adhesion test, if necessary. Centre the TESCON VANA system adhesive tape on the overlap and gradually stick it in place, ensuring that there are no folds or tension. Rub firmly using the PRESSFIX application tool to secure the adhesive bond. Ensure that there is sufficient resistance pressure.
3. Tape the overlap
Clean the subsurface (dry and free of dust, silicone and grease) and carry out an adhesion test, if necessary. Centre the TESCON VANA system adhesive tape on the overlap and gradually stick it in place, ensuring that there are no folds or tension. Rub firmly using the PRESSFIX application tool to secure the adhesive bond. Ensure that there is sufficient resistance pressure.
4. Joint at bargeboard
Firstly, apply a smooth plaster finish to rough wall caps. Clean the subsurface. Apply a line of ORCON F adhesive sealant of at least d = 5 mm (³⁄₁₆″) (more in the case of rough subsurfaces, if necessary). Apply the membrane, leaving slack to allow for expansion, and do not press the adhesive completely flat so as to allow for relative motion between components. Alternatively, ORCON MULTIBOND can be used for sealing.
4. Joint at bargeboard
Firstly, apply a smooth plaster finish to rough wall caps. Clean the subsurface. Apply a line of ORCON F adhesive sealant of at least d = 5 mm (³⁄₁₆″) (more in the case of rough subsurfaces, if necessary). Apply the membrane, leaving slack to allow for expansion, and do not press the adhesive completely flat so as to allow for relative motion between components. Alternatively, ORCON MULTIBOND can be used for sealing.
5a. Joints at rafters
Cut the membrane as necessary and guide it around the rafters.
5a. Joints at rafters
Cut the membrane as necessary and guide it around the rafters.
5b. Joints at rafters
Bond the membrane to the top and sides of the rafters and to the ring beam using ORCON F.
5b. Joints at rafters
Bond the membrane to the top and sides of the rafters and to the ring beam using ORCON F.
5c. Joints at rafters
Stick the membrane cut and joint underneath the rafters using TESCON VANA system adhesive tape. Apply a line of ORCON F adhesive between the rafters and TESCON VANA.
5c. Joints at rafters
Stick the membrane cut and joint underneath the rafters using TESCON VANA system adhesive tape. Apply a line of ORCON F adhesive between the rafters and TESCON VANA.
5d. Joints at rafters
Tape the corners using TESCON VANA. If necessary, pre-treat reconditioned wood or knee walls using TESCON PRIMER RP or TESCON SPRIMER.
5d. Joints at rafters
Tape the corners using TESCON VANA. If necessary, pre-treat reconditioned wood or knee walls using TESCON PRIMER RP or TESCON SPRIMER.
6. Joint at wall cap
Firstly, apply a smooth plaster finish to rough wall caps. Clean the subsurface. Apply a line of ORCON F adhesive sealant of at least d = 5 mm (³⁄₁₆″) to the wall cap (more in the case of rough subsurfaces, if necessary). Apply the membrane, leaving slack to allow for expansion, and do not press the adhesive completely flat so as to allow for relative motion between components.
6. Joint at wall cap
Firstly, apply a smooth plaster finish to rough wall caps. Clean the subsurface. Apply a line of ORCON F adhesive sealant of at least d = 5 mm (³⁄₁₆″) to the wall cap (more in the case of rough subsurfaces, if necessary). Apply the membrane, leaving slack to allow for expansion, and do not press the adhesive completely flat so as to allow for relative motion between components.
7. Insulate the fascia surface
Fill the space between the rafters with insulation material on the fascia surface.
7. Insulate the fascia surface
Fill the space between the rafters with insulation material on the fascia surface.
8. Sealing around cables
Place a KAFLEX cable grommet over the cable and stick to the membrane. The cable grommets are self-adhesive.
The range includes:
- KAFLEX mono (see photo)
- KAFLEX duo - for 2 cables
- KAFLEX multi - up to 16 cables
- KAFLEX post - for retrofit installation
8. Sealing around cables
Place a KAFLEX cable grommet over the cable and stick to the membrane. The cable grommets are self-adhesive.
The range includes:
- KAFLEX mono (see photo)
- KAFLEX duo - for 2 cables
- KAFLEX multi - up to 16 cables
- KAFLEX post - for retrofit installation
9. Sealing around pipes
Place a ROFLEX pipe grommet over the pipe and stick to the membrane using TESCON VANA.
9. Sealing around pipes
Place a ROFLEX pipe grommet over the pipe and stick to the membrane using TESCON VANA.
10. Insulation cover
In the case of roof retrofit work from the outside and installation between two layers of insulation, the choice of insulation materials for the two layers is limited to mineral or rock wool. Please contact Technical Support at pro clima in Germany for assistance with calculating the possible insulation thicknesses.
10. Insulation cover
In the case of roof retrofit work from the outside and installation between two layers of insulation, the choice of insulation materials for the two layers is limited to mineral or rock wool. Please contact Technical Support at pro clima in Germany for assistance with calculating the possible insulation thicknesses.
11. Install a roofing underlay membrane
The final step is to install a roofing underlay (sd value ≤ 0.10 m; g value ≤ 0.50 MN·s/g; vapour permeance ≥ 32.8 perms), e.g. SOLITEX MENTO 3000.
11. Install a roofing underlay membrane
The final step is to install a roofing underlay (sd value ≤ 0.10 m; g value ≤ 0.50 MN·s/g; vapour permeance ≥ 32.8 perms), e.g. SOLITEX MENTO 3000.