Verified by manufacturer 2 months ago
Joint sealant specially designed to provide protection against vapour in steam rooms and other areas with high-levels of humidity.
For joint sealing in high humidity areas whereby standard tanking is not sufficient i.e. swimming pool and steam room applications.
wedi 620 is used for the waterproof adhesion of wedi sealing tapes, sealing corners, sealing gaiters, sealing membranes and wedi building boards with vapour membrane barrier applied in the factory.
In addition, the joint areas of the wedi Subliner Dry and wedi Subliner Dry & Flex sealing membranes can be bonded and sealed with wedi 620. For wedi Subliner Dry, the joint connections can be realized as overlaps or with a sealing tape. The joint areas for wedi Subliner Dry & Flex are always butt jointed and bonded with wedi sealing tapes and wedi 620.
wedi 620 is a single-component, ready-to-use, polymer sealant. It is indispensable to use in combination with wedi Vapor 85 building boards in areas with high-level of humidity and alongside wedi sealing tapes, sealing corners, sealing gaiters, sealing membranes. Its spreadable consistency makes joint sealing a breeze.
Features and benefits:
Application details:
wedi 620 should be applied to the bonding surface with no
bubbles and with good coverage (thickness maximum 3 mm). For surface bonding, wedi 620 should be thinly spread on the surface with a fine grooved spatula or similar. The sealant is applied to the surface approx. 10 mm beyond the border areas of the sealing tape, moulded part or sealing sheet.
Sealing corners, sealing tapes or moulded parts are inserted into the fresh adhesive layer and pressed on (e.g. with a trowel or pressure roller) so that the sealant is pushed out of the sides. The excess material is smoothly removed with a smoothing trowel.
Folds and distortions should be smoothed out and pressed down. The hardening time can be reduced by moistening slightly with water and high temperatures. Once the wedi 620 has hardened, tiling can begin.
If wedi sealing membranes are applied with an overlap (wedi Subliner Dry), wedi 620 is applied to the overlapping area (min. 5 cm) and spread with a suitable smoothing trowel. The overlapping sealing membrane is then pressed into the adhesive bed (e.g. with a trowel or pressure roller). Material which escapes is smoothly removed with a smoothing trowel.
If wedi sealing membranes are butt jointed (wedi Subliner Dry or wedi Subliner Dry & Flex), they are bonded to one another and sealed at the joint with sealing tape. wedi 620 is applied to both sides of the joint area with a suitable smoothing trowel. The sealing tape is then pressed into the adhesive bed (e.g. with a trowel or pressure roller). Material which escapes is smoothly removed with a smoothing trowel.
Sealant which has not hardened can be removed while wet using rubbing alcohol or white spirit. Once hardened, it can only be removed mechanically.
Color | Grey |
Finish | Smooth |
Material | Polymer |
Shape | Formless |
Size | Manufacturer guidance290ml cartridge |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Warranty description | Ten year |
Uniclass | |
CAWS | Z22/310 Joints K11/60 Board M40/815 Sealant movement joints |
Product range |
Material | Silane-modified polymer (SMP). |
Third party certification | SINTEF. |
Colour | Anthracite (dark grey). |
Temperature resistance | -40°C to +100°C. Guidance for specification option: Up to +180°C for a short time, maximum 30 minutes. |
Skin formation at 23°C and 50% Relative Humidity (RH) | After approx. 15 minutes. |
Curing | Approx. 24 hours per 3 mm. |
Contains Red List materials | No |
Country of material origin | Germany |
Country of product manufacture | Germany |
NBS BIM Object Standard
This BIM object has been authored to meet the requirements of the NBS BIM Object Standard.
Find out more about the NBS BIM Object Standard.
Platform | Compatible | Version |
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