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wedi 620 Vapor Sealant - single component sealant

Verified by manufacturer 29 days ago

Wedi Systems (UK) Ltd

Joint sealant specially designed to provide protection against vapour in steam rooms and other areas with high-levels of humidity.

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+44 (0)161 864 2336 Website

Application

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.

Description

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:

  • Its versatility makes it suitable for one-step bonding and sealing the joints of; wedi Subliner sealing membranes, wedi Vapor 85 building boards with vapour membrane barrier applied in the factory.
  • Reacts to form an elastic adhesive in the presence of humidity.
  • It has excellent weather and chemical resistance.
  • The product is free of solvents, silicon and PCPs and has low shrinkage.


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.

General information

Color

Grey

Finish

Smooth

Material

Polymer

Shape

Formless

Size

-

Manufacturer guidance

290ml cartridge

Length

Bespoke

Width

Bespoke

Height

Bespoke

Warranty description

Ten year

Uniclass

Pr_30_31_76_96 Waterproof gap filling sealantsPrimary

CAWS

Z22/310 Joints

K11/60 Board

M40/815 Sealant movement joints

Product range

Tile Backer Boards / Vapor Boards (for high humidity)
Accessories / Sealants

Specification data - Waterproof gap filling sealants

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.

Sustainability data

Contains Red List materials

No

Country of material origin

Germany

Country of product manufacture

Germany

BIM objects

BOS

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
IFC
-

1

Revit
-

1

Literature

wedi 620 Vapor Sealant TD

wedi 620 Vapor Sealant TD

2022 wedi World of Systems brochure

2022 wedi World of Systems brochure

wedi at a glance 2022

wedi at a glance 2022

wedi Flyer - Vapor 85 & wedi 620

wedi Flyer - Vapor 85 & wedi 620

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