Cavity Trays

Parapet Walls? – Avoid Taking the Wrong Step

November 24, 2017 Kirsty HammondWalls

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 tray within a cavity parapet[…]

Insulated floor/wall junctions and potential weakness?

November 16, 2017November 16, 2017 Kirsty HammondCladding & Insulation

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 question arises of whether edge[…]

Masonry structural stability and surface staining

November 7, 2017November 7, 2017 Kirsty HammondStructural Engineering

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 position. Unfortunately, the practice can[…]

Cavitray BWVC Solves Damp Dilemma

November 3, 2017November 4, 2017 Kirsty HammondWalls

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. Nothing had changed as far[…]

Curved Cavity Wall Changes the Roof Pitch?

March 9, 2017November 26, 2017 Kirsty HammondWalls

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 slope. For a brief moment[…]

Cavity Trays latest building envelope solutions at the Scotland Build Show 2016

November 17, 2016 Kirsty HammondCladding & Insulation

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 Trays of Yeovil has a history[…]

Cavity Trays Latest Building Envelope Solutions at the Build Show

September 7, 2015 Kirsty HammondArchitecture

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 of Yeovil has a history[…]

Building Regulations When Tackling New and Existing Flat Roofs

May 21, 2015November 3, 2017 Kirsty HammondRoofing & Maintenance

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 replacing a cold flat roof,[…]

Protecting the Building Envelope

March 9, 2015 Kirsty HammondConstruction

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 more than 168 enhancements plus[…]

Tread Carefully Using the BS 8215 DPC Staircase

March 17, 2014October 27, 2017 Kirsty HammondArchitecture

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 to BS 8215 as a[…]

Recent Storms Cause Dampness in Conservatories and Extensions

February 10, 2014 Kirsty HammondConstruction

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 conservatory/extension roof, and gravitated below[…]

Level Threshold Openings – An Easy Method of Ensuring Damp Protection Integrity

November 18, 2013November 14, 2017 Kirsty HammondConstruction

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 most susceptible to damp transference,[…]

Triangular Weep Modernises Traditional Practice

September 4, 2013 Kirsty HammondCompany News

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 be incorporated within solid walls[…]

Cavity Wall Movement Challenges PD 6697

July 19, 2013October 27, 2017 Kirsty HammondArchitecture

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 if the parapet is curved,[…]

Avoid going adrift on a raft

April 10, 2012December 6, 2017 Kirsty HammondWalls

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 wall, (as depicted within the[…]

Prevent a damp outside skin becoming a damp inside wall when an extension is added

January 30, 2012January 2, 2018 Kirsty HammondWalls

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 only, there is nothing to[…]

Why Protecting Partial Fill Insulation in a Gable is Essential

November 24, 2011December 6, 2017 Kirsty HammondCladding & Insulation

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 than extend it up to[…]

Cavity Trays Production Uses Photovoltaic Panel Power

October 13, 2011 Kirsty HammondConstruction

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 panels. The panels generate enough[…]

Concave and Convex Cavity Walls – Caution with Window Openings and Abutments

August 12, 2011December 4, 2017 Kirsty HammondWalls

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 the outer skin. In a[…]

Cavity Wall Openings with a Difference

July 7, 2011November 27, 2017 Kirsty HammondWalls

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 two separate lintels, with an[…]

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ARCHITECTURE – DESIGN – INNOVATION

Tag: Cavity Trays

Parapet Walls? – Avoid Taking the Wrong Step

Insulated floor/wall junctions and potential weakness?

Masonry structural stability and surface staining

Cavitray BWVC Solves Damp Dilemma

Curved Cavity Wall Changes the Roof Pitch?

Cavity Trays latest building envelope solutions at the Scotland Build Show 2016

Cavity Trays Latest Building Envelope Solutions at the Build Show

Building Regulations When Tackling New and Existing Flat Roofs

Protecting the Building Envelope

Tread Carefully Using the BS 8215 DPC Staircase

Recent Storms Cause Dampness in Conservatories and Extensions

Level Threshold Openings – An Easy Method of Ensuring Damp Protection Integrity

Triangular Weep Modernises Traditional Practice

Cavity Wall Movement Challenges PD 6697

Avoid going adrift on a raft

Prevent a damp outside skin becoming a damp inside wall when an extension is added

Why Protecting Partial Fill Insulation in a Gable is Essential

Cavity Trays Production Uses Photovoltaic Panel Power

Concave and Convex Cavity Walls – Caution with Window Openings and Abutments

Cavity Wall Openings with a Difference