sealant

Describes the results of air tightness tests of various service penetrations through a polythene vapour barrier and associated insulation. The service penetrations studied were insulated and uninsulated ventilation ducts, plastics, pipes, electrical boxes and electrical conduits. Various methods of sealing the penetration were tested for each case. Recommendations are made for choice of sealing method based on performance and case of installation. Examples are given of the effect of leakage through service penetrations on total building leakage.

Identifies the main categories of seal used in weatherstripping doors and windows. These include compression seals which are compressed during closure to form a seal, wiper seals which form a seal as they slide over a closing surface, and gap fillers and sealants which restore a fit between closing surfaces. Outlines broadly the merits and disadvantages of each, and provides general guidance on seal selection and application.

Caulks and sealants are used to fill and seal joints, in order to prevent draughts and the intrusion of rain and dust. There are two types of joints; non-working joints in which there is little or no movement of the joined parts, and working joints which are designed to allow movement. Discusses for each type of joint, factors to consider when selecting a sealant and suitable types of material.

Notes that many existing dwellings are inadequately insulated and in need of caulking and weatherstripping. Gives criteria for the selection of retrofit materials which are eligible for the Department of Energy Weatherization Assistance Program. Materials discussed are insulation, storm windows and doors, caulks and sealants, weatherstripping, vapour barriers, clock thermostats and replacement windows. Discusses the literature on retrofitting. Describes the different caulks and sealants available. Outlines precautions to be taken when applying different retrofit materials.

This is a short guide to mastics and sealants used to seal the joint between an aluminium window and a structure. Gives table of materials available, and their properties. Gives detailed instructions for applying sealants to window joints.

The authors have developed a Fortran IV computer program for estimating whole body and lung dose equivalent rates due to naturally occurring radionuclides in building materials. Two of the inputs to this program are the effects of wall thickness and the effects of a surface sealant on the gamma exposure ratedue to the increased quantity of radon daughter nuclides trapped within a wall.