Timber Frame Construction?
Best Practice Considerations Where Timber Frame and Floors Meet Is the way in which timber frame construction and SIPS construction integrate at ground level flawed? Currently reliance is placed on …
Cavity Trays
Cannot See the Caviweep – Cannot Miss the Advantages
When choosing the best cavity weep to suit a project, one should consider the exposure and the finish of the elevation. Choosing a weep that offers sufficient outflow to service …
National and international best practice build details
‘New 2019 manual is extensive, informative and contains excellent construction solutions’ Cavity Trays of Yeovil is the longest-established specialist in its field, and importantly is the only UK cavity tray …
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 which is the cavity and …
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 maintaining an equal distance apart. …
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 the Housebuilder 2018 Awards. Designed …
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 downward flow is interrupted and …
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 on support by being built …
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 situations, it is called the …
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 it states the protective DPC …
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 of the structure. But the …
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 soft or pliable DPC in …
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 ceilings under the bay roofs. …
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 of intersection changes throughout the …
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 Scotland Build Show 2016. Cavity …
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 the Build Show. Cavity Trays …
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 insufficient. Accordingly when constructing or …
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 details. This latest edition includes …
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 6697 it currently refers back …
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 property wall area above the …
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 isolating one of the area’s …
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. Its’ size meant it could …
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 than are normally encountered. And …
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 there is a timber separating …
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 the abutting roof is flashed …
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 across the gable ends rather …
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 its factory roof of photovoltaic …
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 water and its permeation 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. One approach is to use …