T-Butyl Joint Tape is used as a splicing aid, for extra sealing, or for repairs.
The ventilation and air exchange of the crawl space should be outdoor air ventilated and is assumed to be according to standard practice.
The function as a radon barrier is based on normal risk areas and the Swedish National Board of Housing, Building and Planning's requirement of a maximum of 200 Bq/m.
For the installation of a radon barrier, also carefully consider the accompanying document "Details for installation as a radon barrier".”
Storage should be protected from sunlight (UV radiation) and higher temperatures (>+35°C) as this shortens the lifespan.
1.
Filler piece upper corner foundation wall
2.
Joint lower inner corner foundation wall
3.
Overlap joint with bottom fold-up
4.
Seals at pass-throughs
5.
Ventilation openings
Possible assembly reinforcement where needed.
6.
Schematic drawing of crawl space in lightweight concrete with concrete base and heart wall (two options)