2019 New Solutions – Cavitray Compliant Walls
When building in natural stone, there are two popular methods of construction. The traditional method is to build against a backing skin of blockwork, behind …
Tag: Cavity Trays
Adding an extension? – Be sure to have cavitray compliant cavity walls
When an existing house is constructed with cavity walls, extending the building should always follow the ‘parallel rule’ – the term applied to both skins …
Best New Construction Industry Product in 2018
The new Type PAT – Protective Adjustable Threshold – manufactured by Cavity Trays of Yeovil has just secured the Product of the Year Award in …
Arches, Cavity Walls & Pinch Points
Rain blown against a cavity wall will gradually permeate the exterior masonry skin and gravitate downwardly. Where the cavity wall incorporates an arched opening, the …
Rise and Fall Cavity Barriers Turn a Problem into a Solution
Cavity wall (contaminated land) gas barriers usually rise not less than 150mm in the cavity and often have to rise considerably more as they rely …
New Protective Adjustable Threshold Eliminates Construction Problem
Yeovil-based Cavity Trays Ltd has developed a ready-to-use solution to eliminate a reoccurring construction problem when building on contaminated land. Originally conceived for Radon gas …
Parapet Walls? – Avoid Taking the Wrong Step
Parapet cavity walls behave differently because both faces are exposed. The prevailing document dealing with the design of masonry structures and sections is PD6697 and …
Insulated floor/wall junctions and potential weakness?
The provision of insulating mediums under or on top of floor slabs and to all slab edges reduces heat loss and improves the acoustic behaviour …
Masonry structural stability and surface staining
The practice of providing support to cavity-spanning DPC’s by building into both masonry skins came about because there were few alternative options to hold a …
Cavitray BWVC Solves Damp Dilemma
A builder who had constructed houses with bay windows in the same manner for years was puzzled why several of his latest homes had damp …
Curved Cavity Wall Changes the Roof Pitch?
The pitch of an abutting roof may be constant where it strikes a flat cavity wall, but if the wall is curved the actual angle …
Cavity Trays latest building envelope solutions at the Scotland Build Show 2016
The only cavity tray company in the UK awarded European Technical Approval and the longest-established in its specialised filed is displaying its latest products at the …
Cavity Trays Latest Building Envelope Solutions at the Build Show
The longest-established company in its specialised field and the only cavity tray company in the UK awarded European Technical Approval is displaying it latest products at …
Building Regulations When Tackling New and Existing Flat Roofs
Building Regulations now require where feasible the extent of insulation within specified elements is upgraded as part of renovation works if the existing provisions are …
Protecting the Building Envelope
The 2015 edition of ‘Protecting the Building Envelope’ (volume 27) is a full colour A5 manual of 147 pages containing the latest best practice building …
Tread Carefully Using the BS 8215 DPC Staircase
Various British Standards have been withdrawn in the past few years but one that remains is BS 8215. If you pick up the latest PD …
Recent Storms Cause Dampness in Conservatories and Extensions
As a consequence of the recent storms, conservatories and extensions previously unaffected by rain have become damp and wet inside. Rain has penetrated the original …
Level Threshold Openings – An Easy Method of Ensuring Damp Protection Integrity
The Type LTT is a Level Threshold Tray manufactured by Cavity Trays of Yeovil. It provides a uniform standardised construction arrangement that removes risk. By …
Triangular Weep Modernises Traditional Practice
Getting water out of any masonry wall at one time utilised reed straw, chosen because it provided a discreet conduit through which water could evacuate. …
Cavity Wall Movement Challenges PD 6697
Parapet cavity walls behave differently because both faces are exposed. Such dual exposure dictates the protection against damp penetration takes into consideration more variable elements …
Avoid going adrift on a raft
When site conditions dictate the use of raft construction, the builder faces a dilemma of how to bring together conflicting design aspects. In instances where …
Prevent a damp outside skin becoming a damp inside wall when an extension is added
The attachment to an existing exterior skin of an extension results in the original exterior skin becoming an internal wall below the new roofline. If …
Why Protecting Partial Fill Insulation in a Gable is Essential
When constructing cavity walls incorporating partial fill insulation, the insulation terminates at plate level. It is common practice to also terminate insulation at plate level …
Cavity Trays Production Uses Photovoltaic Panel Power
Cavity Trays of Yeovil, the only cavity tray manufacturer awarded European Technical Approval has switched on to a new power source, following the installation on …
Concave and Convex Cavity Walls – Caution with Window Openings and Abutments
As well as affecting the extent of localised water-wash passing over the surface of the masonry, curved cavity walls can also change the behaviour of …
Cavity Wall Openings with a Difference
The thermal insulation integrity of window and door openings in cavity walls can be increased by using an approach that combines new and traditional methods. …
