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Aerosana Visconn Black (dark blue colour before drying)

Pro Clima Aerosana Visconn

Certified Passivhaus Component
Certified Passivhaus Component
Stock code: PCAV10
Stock code: PCAV10W

Pro Clima Aerosana Visconn

Sprayable/brush applied airtightness liquid membrane

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£96.76

Excl VAT

£96.76

Excl VAT

£96.76

Excl VAT

In Stock: Usually delivered within 3-4 working days
£96.76

Excl VAT

In Stock: Usually delivered within 3-4 working days
  • Product Overview
  • Technical Details
  • Installation guide

Main purpose

A liquid applied barrier to seal air porous substrates to ensure airtightness.

Use it on

Brickwork, blockwork, concrete substrates as well as timber sheathing boards.

Overview

Aerosana Visconn is a highly flexible liquid-applied air barrier. As a water-based acrylic dispersion sealant it can be brushed, rolled or sprayed on as a liquid film. Once dry it forms a seamless, elastic, airtight and humidity variable membrane for filling gaps up to 3mm. Larger gaps can be filled with Visconn Fibre.

Where to use it

Primarily used indoors on brick and blockwork to seal porous surfaces and prevent air leakage. It is a viable lightweight alternative to the traditional means of airtightness on masonry buildings where a two coat plaster system would be used. Aerosana Visconn can be combined with vapour open racking boards such as Elka Strong Board in lightweight timber frame buildings to maintain the buildings vapour movement. It can also be used in conjunction with CLT buildings and used externally if in a sheltered location.

What it does

Aerosana Visconn creates an airtight film to seal the porous air permeable substrate it is being applied to. Once dried it provides a robust, permanently elastic fully airtight layer, while allowing for the movement of harmful levels of moisture with its humidity variable properties. It sticks to all standard construction materials, all Pro Clima membranes and membranes made from aluminium and paper.

How it works

Aerosana Visconn is sprayed or brushed on in several coats in order to fully seal pores of the substrate to which it is being applied. Once dried Aerosana Visconn creates a film over the substrate it has been applied to and renders the areas air tight but still with a high degree of flexibility for future movement, something not achievable with the use of plaster or even airtight tapes and membranes. Where gaps of larger than 3mm are present it is recommended to use Aerosana Visconn Fibre which is brush applied to fill gaps up to 20mm.

Why we love it

The wide range of movements that are common in buildings especially during the drying out phase such as issues of cracked plasters can negatively affect the airtightness of buildings as they dry and settle. Due to Aerosana Visconn’s impressive elasticity, the flexibility of the dried material is of significant benefit and offers an impressive range of movement without compromising its robust airtightness properties.

Aerosana Visconn is third party tested by the IFT Rosenheim as a suitable airtight weather resistant material for use in critical window and door junction areas, and has been verified and certified by the renowned Passivhaus Institute.

System warranty

Pro Clima provide a limited system warranty, backed-up with public liability insurance, for all airtightness system, roof and wall sealing system and construction products that they supply. A 10-year warranty is provided for these products when correctly installed in combination with approved thermal insulation materials and other Pro Clima system products. When correctly installed in combination with other manufacturers’ products (not made by Pro Clima), a 6-year warranty is provided.

Features

  • Speedy
  • Versatile
  • Permanently Flexible
  • Humidity variable
  • PH certified
  • Drying times
  • Safe to use

Benefits

  • The application can speed up airtightness installation significantly, especially in awkward retrofit areas around timber elements such as timber joist ends.
  • Can be spray, brush or roller applied in a variety of locations internally or externally.
  • Once dried it has excellent elasticity giving a robust, long term flexible airtightness layer which allows for movement.
  • It is an intelligent airtightness layer with a variable sd value, meaning it maintains vapour movement in the wall/roof.
  • Dries quickly and so allows for better sequencing and more efficient labour on site. Reduces moisture levels on site in comparison to parge coats or a 2 coat wet plaster system on blockwork/ brickwork.
  • ISO 16000 hazardous substance compliant.

Questions

There are currently no questions and answers published for this product

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Technical Details

Key Technical Data

5 °C to 60 °C
Yes
8 m² to 12 m²
12 hours to 48 hours
Ceilings, Interior side of external walls, Internal solid walls, Roofs, Solid floors, Walls (solid stone, brick or masonry)
10 years (when correctly installed with Pro Clima system products only), 6 years (when correctly installed with non-Pro Clima products)
Brush, Roller, Spray
Black
3 months
Aluminium / foil membranes, Chipboard, Hard plastics, MDF, Metal, OSB, PE, PA, PP, PET and foil membranes, Painted timber, Plywood, Pro Clima membranes, Rough sawn timber, Smooth planed timber, Solid stone, brick or masonry
Cool and dry
200 g/m²
Aerosana Visconn
-40 °C to 90 °C
Airtightness, Preventing condensation and mould
2 m
W1
0.65 MNs/g to 50 MNs/g
6 m
0.13 m to 10 m

Technical Datasheet

Material Safety Datasheet (MSDS)

Certification

Installation Guide

Installation Guide

How to Install

Aerosana Visconn can be sprayed, brush or rolled onto the surface to be made airtight. Depending on access and the size of the area needing to be sealed the liquid barrier can be applied in various ways.

Smaller and difficult to reach areas typical in retrofits can often be easily sealed with a brush. Timber joist end details, areas around wall plate at eaves levels as well as junctions around services and electrics can be sealed by brush for a quick drying lightweight airtight solution.

Larger areas of masonry can be sealed effectively using an appropriate spray machine. Areas such as fair faced blockwork in schools or gymnasiums can be coated to effectively seal the porous substrate while maintaining the features and shaped outline of the masonry behind.

For these larger areas the speed of application as well as the significant reduction in the onsite drying time and labour involved with the liquid applied air barrier leads to a much easier, cost effective solution over that of a traditional plastered system.

Preparing the surface before spray applying Aerosana Visconn
Preparing the surface before spray applying Aerosana Visconn
Spray applying Aerosana Visconn to a block wall
Spray applying Aerosana Visconn to a block wall (it will change colour after drying)
Aerosana Visconn once applied to the junction of a block wall and concrete floor
Aerosana Visconn once applied to the junction of a block wall and concrete floor
Aerosana Visconn before application
Aerosana Visconn before application
Aerosana Visconn after application
Aerosana Visconn after application

Hints and Tips

If Aerosana Visconn is applied externally care should be taken to ensure adequate protection is provided against the elements, in particular the rain. Application to frozen surfaces is not possible, and there must be no water-repellent substances (e.g. grease or silicone) on materials to be sprayed.

Aerosana Visconn is capable of covering gaps, cracks and joints of up to 3 mm width. Cracks or pores larger than this 3mm can be sealed using Aerosana Visconn Fibre, capable of sealing gaps of up to 20mm wide.

Porous or rough blockwork should be assessed prior to application and adequate coverage applied to ensure the full filling of pores to achieve superior air leakage results.

Optimum coverage is generally achieved when a layer is first sprayed on horizontally and then sprayed over vertically in a cross pattern.


Horizontally spray applying Aerosana Visconn on hard-to-reach timber joists
Horizontally spray applying Aerosana Visconn on hard-to-reach timber joists
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