CAVITY TRAYS LTD

ADMINISTRATION CENTRE
BOUNDARY AVE
LUFTON TRADING ESTATE
YEOVIL
SOMERSET BA22 8HU

Tel: 01935 474769
Fax: 01935 428223

Company Logo

Suppliers of: cavity wall trays abutment cavity wall trays preformed damp courses cavity wall closers abutment cavity wall closers air bricks roof ventilation soffit ventilation fascia ventilation roof

Cavity Trays Ltd -Manufacturers of Cavity trays, DPCs, Radon Protection, Roof ventilation products &  Cavity closers.

The only cavity tray manufacturer awarded European Technical Approval (ETA).

 

Useful Resources:

Main Product Ranges:

Damp Proofing Products:

A wide selection of Cavity Trays, profiled DPCs and ancilliary products for all construction methods. Cavity trays can be supplied in all sizes and shapes from load bearing lintels to masonry support systems. Damp proofing Courses (DPCs) are available in preformed & profiled systems to provide excellent Damp Proofing Solutions. Other products include weep vents, flashings, remedial products and arresting barriers for all damp proofing problems.

Radon Products:

Cavity trays can also supply an extensive range of Membranes for all applications. These include: * Contaminated Land Gas Reception Sump * Gas and Water Outlets and Service Entry Points * Methane Barriers * Radon (Cavity) Barriers * Service Pipe Entry Seals (top hats) * Type N Sitesealer Membrane

Ventilation Products:

Cavity Trays supply a wide range of products to solve ventilation problems on all contruction projects. Products include: Air bricks, sleeves, Ventilators, Roof vents, roofline Ventilation for Soffits, eaves and Fascias.

Associated Products:

Cavity Trays offer a wide range of associated products to include: Masonry Attachment Profiles, Loft access doors & hatches, Eaves Protection, Bonding strips and valley gutters.

Cavity Closer Ranges:

Cavity Trays supply a wide range of Cavity Closers for all construction & refurbishment methods. Products include: Bespoke Traditional Cavity Closers, Fire integrity stops & barriers, Acoustic barriers, waterproof barriers, insulated cavity closers & barriers.

Main Product categories:

Threshold cavity trays, Cavity cloaks, DPC, Remedial cavity trays, Cavity trays, Party wall trays, Cavity weeps, Wall ventilators, Valley gutters, Cavity closers, cavity closers sash frame, Fire barriers, Fire stops, Cavity closers wide cavity, Access panels fire resistant, Access panels, Cavity socks, Damp proofing membranes, Dampcourse jointing tapes, Dampcourses gas resistant, Membranes Contaminated land, Radon protection systems, Roof space ventilators, Ventilation grilles, air bricks, air brick adaptors, Ventilation roof void, Ventilation roof space.

ACCESS DOORS .
ACCESS DOORS Ceilings
ACCESS DOORS Walls Loft Eaves Access
ACCESS HATCHES See Also ACCESS COVERS: See Also ROOF ACCESS HATCHES:/LOFT ACCESS DOORS:
ACCESS PANELS Ceiling
AIR BRICK Adaptors
AIR BRICK Ducting Connectors
AIR BRICK Sleeves
AIR BRICK Ventilators Telescopic Adjustable
AIR BRICKS .
AIR BRICKS Ducted Cavity Liner
AIR BRICKS Polypropylene
AIR BRICKS Ventilation
CABLE CONDUITS Floor Ducting
CABLE CONDUITS Floor Ducting In-Screed Trays
CABLE CONDUITS Floor Ducting Screeded Floor
CAVITY BARRIERS Acoustic
CAVITY BARRIERS Acoustic Fire Rated 120 Minutes
CAVITY BARRIERS Acoustic Fire Rated 240 Minutes
CAVITY BARRIERS Acoustic Fire Rated 60 Minutes
CAVITY BARRIERS Fire Resistant Acoustic Building Regs Part E
CAVITY BARRIERS Fire Resistant BS 476:1987 Part 20/22 60 Minutes
CAVITY BARRIERS For Rainscreen Systems
CAVITY BARRIERS Methane Gas Resistant
CAVITY BARRIERS Party Walls BS 476 150 Minutes
CAVITY BARRIERS Party Walls DPC Combined
CAVITY BARRIERS Radon Gas Barriers
CAVITY BARRIERS Robust Details Requirements
CAVITY BARRIERS Timber Frame Applications
CAVITY BARRIERS Ventilated Fire Seals
CAVITY BARRIERS Ventilated Fire Seals BS 476 Part 20
CAVITY BARRIERS Ventilated Fire Seals Rainscreen Systems
CAVITY BARRIERS Ventilated Fire Seals Timber Frame Constructions
CAVITY CLOAKS .
CAVITY CLOSERS Acoustic
CAVITY CLOSERS Acoustic Fire Resistant
CAVITY CLOSERS AGREMENT CERTIFICATE HOLDERS
CAVITY CLOSERS Ground Bearing Floor Insulating Perimeter Systems
CAVITY CLOSERS Ground Bearing Party Wall Insulating Systems
CAVITY CLOSERS Insulated
CAVITY CLOSERS Insulated AGREMENT CERTIFICATE HOLDERS
CAVITY CLOSERS Insulated Cavity Fire Barrier Combined
CAVITY CLOSERS Insulated Custom Sizes
CAVITY CLOSERS Insulated DPC Combined
CAVITY CLOSERS Insulated DPC Combined Refurbishment
CAVITY CLOSERS Insulated DPC Combined Sash Frame
CAVITY CLOSERS Insulated DPC Support
CAVITY CLOSERS Insulated Fire Resistant BS 476 Part 20: 30 Minutes
CAVITY CLOSERS Insulated Fire Resistant BS 476 Part 20: 60 Minutes
CAVITY CLOSERS Insulated Fire Resistant BS 476 Part 20:120 Minutes
CAVITY CLOSERS Insulated Fire Resistant BS 476 Part 20: 90 Minutes
CAVITY CLOSERS Insulated Fire Resistant BS 476 Part 20:240 Minutes
CAVITY CLOSERS Insulated Sound Reducing
CAVITY CLOSERS NHBC/Zurich/Premier Requirements
CAVITY CLOSERS Purpose Made Bespoke
CAVITY CLOSERS Reveal Closers
CAVITY CLOSERS Robust Details Requirements
CAVITY CLOSERS Wide Cavity
CAVITY CLOSING DPCs Preformed
CAVITY CLOSING DPCs Purpose Made
CAVITY DRAINAGE Membranes
CAVITY DRAINAGE Waterproofing Membranes
CAVITY FIRESTOPS Cavity Wall Insulation
CAVITY FIRESTOPS Sloping Barriers
CAVITY STOPS DPC Combined
CAVITY TRAYS Abutment Gable Abutments
CAVITY TRAYS Acoustic
CAVITY TRAYS AGREMENT CERTIFICATE HOLDERS
CAVITY TRAYS Arch Window
CAVITY TRAYS Balcony Opening
CAVITY TRAYS Blockwork
CAVITY TRAYS BS 5628:Part 3
CAVITY TRAYS BS 8215
CAVITY TRAYS Building Extension
CAVITY TRAYS Building Regs.
CAVITY TRAYS Bullseye Window
CAVITY TRAYS Circular Window
CAVITY TRAYS Conservatory Attachment
CAVITY TRAYS Curved
CAVITY TRAYS EUROPEAN TECHNICAL APPROVAL
CAVITY TRAYS Gas Barrier
CAVITY TRAYS Horizontal
CAVITY TRAYS Insulating
CAVITY TRAYS Integral Flashing
CAVITY TRAYS Lead Substitute
CAVITY TRAYS Leaded
CAVITY TRAYS Lintel
CAVITY TRAYS Masonry Support
CAVITY TRAYS Meter Boxes
CAVITY TRAYS NHBC Standards
CAVITY TRAYS Non-Combustible BS EN 13501-1:2007 Euroclass A1
CAVITY TRAYS Non-Combustible BS EN 13501-1:2007 Euroclass A2
CAVITY TRAYS Parapet
CAVITY TRAYS Party Walls
CAVITY TRAYS Pitched Roof
CAVITY TRAYS Polypropylene
CAVITY TRAYS Preformed Horizontal
CAVITY TRAYS Purpose Made
CAVITY TRAYS Refurbishment
CAVITY TRAYS Remedial
CAVITY TRAYS Renewal
CAVITY TRAYS Ridge
CAVITY TRAYS Sill Forming
CAVITY TRAYS Stepped
CAVITY TRAYS Stone Mullion
CAVITY TRAYS Threshold
CAVITY TRAYS Threshold Level Thresholds
CAVITY TRAYS Timber Frame Constructions
CAVITY TRAYS Undersill
CAVITY TRAYS Vertical
CAVITY TRAYS Wall Weeps Beak Pyramid Masony Bleed Straw
CAVITY TRAYS Wall Weeps Non-Combustible BS EN 13501-1:2007 Euroclass A1
CAVITY TRAYS Wall Weeps Telescopic Adjustable
CAVITY TRAYS Weep Combined
CAVITY TRAYS Window Sill Window Cill
CAVITY WALL Links
CAVITY WALL Sleeves Fire Protection
CAVITY WALL Ventilators
CAVITY WALL Ventilators Methane Gas Discharge
CAVITY WALL Ventilators Passive Radon Gas Evacuation
CAVITY WALL Ventilators Weep Combined
CAVITY WALL Weep Hole Ducts
CAVITY WALL Weep Hole Ducts Concealed
CAVITY WALL Weep Vents
CAVITY WALL Weep Vents Non-Combustible BS EN 13501-1:2007 Euroclass A1
CHIMNEY Flashings
DAMP PROOFING Purpose Made
DAMPCOURSE Accessories
DAMPCOURSE Fixing Strips
DAMPCOURSE Jointing Tape
DAMPCOURSES Arched
DAMPCOURSES Arched Insulating
DAMPCOURSES Arched Insulating AGREMENT CERTIFICATE HOLDERS
DAMPCOURSES Cavity Closer Combined
DAMPCOURSES Cavity Closing
DAMPCOURSES Cavity Tray
DAMPCOURSES Cavity Tray Gas Resisting
DAMPCOURSES Gas Resistant
DAMPCOURSES Gas Retardant
DAMPCOURSES Horizontal
DAMPCOURSES Insulating
DAMPCOURSES Methane Barrier
DAMPCOURSES Petheleyne
DAMPCOURSES Polyethylene BS 6515:1984
DAMPCOURSES Polypropylene
DAMPCOURSES Preformed Profile
DAMPCOURSES Preformed Profile Circular
DAMPCOURSES Preformed Profile Cloaks Combined
DAMPCOURSES Preformed Profile Curved
DAMPCOURSES Preformed Profile Party Wall System
DAMPCOURSES Preformed Profile System Building Applications
DAMPCOURSES Preformed Profile Timber Frame and SIPs Constructions
DAMPCOURSES Preformed Profile Timber Frame Constructions
DAMPCOURSES Preformed Units
DAMPCOURSES Purpose Made
DAMPCOURSES Vertical
DAMPCOURSES Vertical Insulating
DUCTING Floor In-Screed Trays
DUCTING Underfloor Screed Floor Ducting
EAVES Bird Vermin Barrier
EAVES Continuous Course
EAVES Filler Combs
EAVES Guards Gutter Drip
EAVES Protection Systems Vented Eaves Protectors
EAVES VENTS Corbel
EAVES VENTS Insect Screen Incorporated
EAVES VENTS Over Fascia
EAVES VENTS Refurbishment
EAVES VENTS Roll Form
EDGE INSULATOR DPC
FABRICATIONS Bespoke Leadwork
FASCIAS Ventilated
FIRE BARRIERS Acoustic Tray Combined
FIRE BARRIERS Cavity Tray Combined
FIRE BARRIERS Cavity Wall
FIRE BARRIERS Floor Level
FIRE PROTECTION For Rainscreen Cladding
FIRESTOPS Acoustic Tray Combined
FIRESTOPS Cavity Tray Combined
FIRESTOPS Floor Level
FIXINGS Masonry Attachment Profiles
FLASHING Anchoring Systems
FLASHINGS AGREMENT CERTIFICATE HOLDERS
FLASHINGS Colourcoated
FLASHINGS For Profiled Sheets
FLASHINGS Lead
FLASHINGS Lead Chimney Stack
FLASHINGS Lead Purpose Made
FLASHINGS Non-Lead Leadfree
FLASHINGS Synthetic AGREMENT CERTIFICATE HOLDERS
FLASHINGS Synthetic Anti-Theft
FLASHINGS Ventilating
FLAT ROOF Vents
GROUND GAS Sumps
JOIST Gloves
LEAD SHEETS .
LEAD SHEETS BS EN 12588:1999
LINTEL DPC Trays
LINTEL Stop Ends
LINTELS Cavity Tray Combined
LINTELS Steel Roller Shutter Combined
LOFT ACCESS DOORS 0.35 U Value
LOFT ACCESS DOORS BRE and NHBC
LOFT ACCESS DOORS Building Regs. Approved Document L
LOFT ACCESS DOORS Fire Rated
LOFT ACCESS DOORS Fire Rated BS 476:Part 22 .1/2 hour / 30 Minutes
LOFT ACCESS DOORS Fire Rated BS 476:Part 22 1 Hour / 60 Minutes
LOFT ACCESS DOORS Fire Rated BS 476:Part 22 2 Hour / 120 Minutes
LOFT ACCESS DOORS Insulated
LOFT ACCESS DOORS Insulated PVC
LOFT ACCESS DOORS Loft Hatches
LOFT ACCESS DOORS Loft Hatches Insulated BS 476:Part 20 60 Minutes
LOFT ACCESS DOORS Loft Hatches Insulated Building Regs Document L1/L2 Compliant
LOFT ACCESS DOORS Non-Combustible
LOFT ACCESS DOORS Non-Combustible BS 476 Part 6: Class 0
LOFT ACCESS DOORS Part L 2010 Compliant
LOFT ACCESS DOORS Steel
MASONRY SUPPORT SYSTEMS Cavity Tray
MEMBRANES Carbon Dioxide Retardant CO₂ Barrier
MEMBRANES Cavity Drain / Cavity Former See Also CAVITY DRAINAGE: Membranes
MEMBRANES Contaminated Land
MEMBRANES Damp Proofing DPM
MEMBRANES Gas Barrier
MEMBRANES Gas Retardant
MEMBRANES Loose Laid Oversite
MEMBRANES Loose Laid Radon and Methane and CO₂ Resistant
MEMBRANES Loose Laid Radon and Methane Resistant
MEMBRANES Methane Gas Retardant
MEMBRANES Oversite
MEMBRANES Polythene
MEMBRANES Radon Barrier
MEMBRANES Radon Resistant
MEMBRANES Tanking .See Also MEMBRANES: Waterproofing
NOISE CONTROL Barriers .See Also ACOUSTIC BARRIERS:
PIER Cloaks
PIPE Entry Seals Top Hat
RADON Barriers
RADON Barriers Loose Laid
RADON Cavity Barriers Radon Gas Resistant
RADON Cavity Barriers Threshold Protection
RADON Gas Evacuation Passive Gas Extraction Airbricks
RADON Protection Systems
RADON Sumps
RAINSCREEN BAFFLES
RAINSCREEN SYSTEMS Cladding Fire Barriers Fire Protection
RENDER PROTECTION COVERS Grille Protection Covers
ROOF Space Ventilators
ROOF ACCESS HATCHES Hinged
ROOF FINISH Bonding Strips
ROOF TRIM Continuous Soaker Systems For Slate and Tile Roofs
ROOF TRIM Soaker Strips For Slate and Tile Roofs
ROOF VALLEYS Troughs Gutters
ROOF VALLEYS Troughs GRP Gutters GRP
ROOF VALLEYS Troughs GRP BS 5534
ROOF VALLEYS Troughs Simulated Lead Gutters Simulated Lead
ROOF VENTILATORS .
ROOF VENTILATORS Abutments
ROOF VENTILATORS Dry Ridge
ROOF VENTILATORS Flush Slate
ROOF VENTILATORS Hip
ROOF VENTILATORS Lead
ROOF VENTILATORS Lead BS EN 12588:1999
ROOF VENTILATORS Over Fascia
ROOF VENTILATORS Slate Extract Vents
ROOF VENTILATORS Soffit
ROOF VENTILATORS Tile Vents
ROOF WINDOW Ventilation
ROOFING Felt Support Trays
ROOFING MEMBRANES Pitched Roof Underlay Undertiling Underslating See Also ROOFING UNDERLAYS PITCHED ROOF MEMBRANES:
ROOFING SLATES Roof Weathering Slates Lead
ROOFING SLATES Ventilator
ROOFING UNDERLAYS PITCHED ROOF MEMBRANES Barrier Membranes
ROOFING UNDERLAYS PITCHED ROOF MEMBRANES Undertile
ROOFING UNDERLAYS PITCHED ROOF MEMBRANES Warm Roofs
ROOFLINE Eaves Vents .See Also EAVES VENTS:
SCALING BARRIERS
SEALANTS Mastic
SEALANTS Mastic: by Special Function: Lead Flashing
SERVICE CONDUITS Ducting In-Screed
SOAKER UNITS
SOFFIT VENTILATOR STRIPS PVC-u GRP
SOFFIT VENTILATORS Circular Soffit Vents
SOFFIT VENTILATORS Continuous
SOFFIT VENTILATORS Integral Insect Screen
SOFFIT VENTILATORS Low Pitch (Below 15 degrees)
SOFFIT VENTILATORS Push In
SOFFITS Ventilated
STRUCTURAL WATERPROOFING Cavity Drainage
STRUCTURAL WATERPROOFING Drainage Systems
TRAYS Sill
VENTILATION Airbricks
VENTILATION Fascia
VENTILATION Flat Roof
VENTILATION Outlets
VENTILATION Outlets Airbrick
VENTILATION Outlets Airbrick Adaptors
VENTILATION Over Fascia
VENTILATION Roof Void
VENTILATION Soffits
VENTILATION Underfloor
VENTILATION Underfloor Telescopic
VENTILATION DUCTING Wall
VENTILATION GRILLES .
VENTILATION GRILLES Insect Screen Incorporated
VENTILATION GRILLES Plastic
VENTILATION LOUVRES .
VENTILATION TERMINALS Flat Roof
VENTILATORS Gas Combustion / Gas Heat Producing Appliances
VENTILATORS Gas Combustion / Gas Heat Producing Appliances Through Wall Ventilation
VENTILATORS Through Wall Ventilation
VENTILATORS Through Wall Ventilation Anti-Draught
VENTILATORS Wall
WALL VENTILATION SLEEVES
WALL VENTILATORS Cavity Wall Weep Vents
WALL VENTILATORS Natural
WALL VENTILATORS Telescopic Adjustable Sleeve
ADVANTAGE Abutment Trays
BEAK WEEP Cavity Wall Weep
CAVI 120 Cavity Closer
CAVI 120 Loft Access Doors
CAVI 150 Cavity Wall Barrier
CAVI 240 Cavity Wall Closer/DPC
CAVI 30 Cavity Wall Closer/DPC
CAVI 60 Cavity Closer
CAVI 90 Cavity Closer
CAVIBRICK Air Bricks
CAVICHECK Fire Stops
CAVICLOAK Preformed Damp Courses
CAVICLOSER Cavity Wall Closer/DPC
CAVILENGTHS Preformed Damp Courses
CAVILINK Cavity Wall Links
CAVILINTEL Lintel & Security Shutter
CAVIROLL DPC
CAVISTRAP DPC Fixing Strips
CAVITRAY Cavity Wall Trays
CAVIVENT Peep Weep Ventilator
CAVIWEEP Peep Weep Ventilator
CONESLATE Roof Weathering Slate
CONTINUITY CLOSER Cavity Wall Closer/DPC
DROPCLOAKS Preformed Damp Course
EUROWEEP Cavity Wall Weeps
HARDEDGE Roofing Felt Supports
LOFTHATCH Loft Access Door
MULTICOURSE Cavity Tray
ONE WAY Roof Underlay
PERFORM Flashings
QUICKCLOSER Cavity Wall Closer/DPC
RADON Cavity Barriers
READY DPC Preformed Damp Courses
SILICONBOND Lead Flashing Sealant
SITESEALER Oversite Radon Membranes
SITESEALER Preformed Membranes

Cavity Trays tech manual provides best practice advice for terraces and balconies

June 2021

Cavity Trays’ technical manual provides best practice advice for terraces and balconies

Specifiers should always consider to what extent water might penetrate a balcony or terrace outer cavity wall, and where that penetrating water might end up.

In the example shown, the exposed outer parapet wall to the high level terrace incorporates an inward-stepping DPC with a flashing under to dress over the terrace surface upstand. Whilst acceptable in theory, the arrangement is flawed. When the exposed outer skin saturates, water can track on the underside of the inward stepping DPC, feeding wet directly into the room(s) below.


In situations where there is living accommodation below the terrace, it is essential that the protective DPC arrangement steps outwardly – despite it being shown otherwise in some technical manuals.

A similar scenario exists with doorways providing access onto an upper-level terrace with rooms below. The protective arrangement in the cavity wall must step outwardly. It should also be remembered that the Building Regulation requirement of ‘fins’ on reveal cavity closers guides penetrating water downwardly, so any adjacent DPC horizontal arrestment detail must interface to receive and evacuate water at that level. Failure to do so can allow water to continue downwardly, discharging from closer fins into the area under - that is supposed to be kept dry.

Masonry skins of all thicknesses can saturate, including exterior skins of 225mm (two-brick ) thickness. Beware of potential under-tracking with any inward stepping DPC in a cavity wall.

The 200-page Cavity Trays Best Practice Technical Manual demonstrates how such weakness can be eliminated using preformed outward-stepping approved Cavitrays and compatible interfacings.

Cavity Trays of Yeovil is the longest-established UK company in its specialised field and the only UK tray manufacturer awarded European Technical Approval.


T: 01935 474769
enquiries@cavitytrays.co.uk
www.cavitytrays.com



COVID-19 Update January 2021 - We are open for business.

March 2021


Following yesterdays Government announcement we can confirm that as a key supplier to the building and construction industry, we remain open as usual.

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