Brick, Block & Mortar
323 sources in the library on brick, block & mortar, 40 on this page cited in a published note. Each one says what the document covers and what it is good for. Name a source to see which document it is and where to read it. One at a time. Page 2 of 9.
- fair RN-3G2Z0L cited
Energy Saving Trust
Condensation control by the numbers. A household typically produces up to 100 litres of moisture a week, which builds on surfaces or stays in the air unless ventilated out. Run a bathroom extractor for at least 15 minutes after a shower or bath and a cooker extractor for at least 15 minutes after cooking, or where there is no fan open a window for the same period. Leave a gap of at least 10mm under internal doors, measured from the top of the floor covering to the bottom of the closed door, so air can move between rooms. Distinguishes condensation from rising and penetrating damp and sets out the order of works.
- fair RN-RV8Z6H cited
Energy Saving Trust
Solid wall insulation costs and the quality problem. Typical installation £12,000 to £15,000, split as around £15,000 for external wall insulation and around £12,000 for internal. Around 33% of the heat lost from an uninsulated home goes through the walls. Homes built before 1920 are more likely to have solid walls, of brick, stone, earth or timber frame with panels. A registered installer should guarantee the work for 25 years, and any TrustMark solid wall insulation company offers a 25 year guarantee backed either by an insurer or through the Solid Wall Insulation Guarantee Agency. Records that in October 2025 the National Audit Office reported on quality failures in wall insulation under government schemes, and that 98% of homes fitted with external wall insulation under ECO4 and the Great British Insulation Scheme have problems needing fixing, with affected households sent an Ofgem letter carrying a Unique Measure Reference Number in early 2026 and a remediation line on 0333 555 1234 option 1.
Cited in Damp Walls: Diagnosing the Type, DPC Injection vs Membrane for Rising Damp, EPC Ratings Explained & How to Improve Yours, Insulation: The Complete Guide and 4 more.
- fair RN-YGZK7S cited
Society for the Protection of Ancient Buildings
SPAB's technical advice on repointing old buildings. It sets the normal rake-out depth as twice the joint width, deeper for wide joints, rather than a fixed millimetre figure.
Cited in Choosing Stone Restoration Or Replacement Brickwork, How to Make Mortar, Lime Plaster & Lime Mortar Explained.
- fair RN-10YNBK cited
The Society for the Protection of Ancient Buildings
The SPAB's page for its free technical advice line on old buildings; it confirms the line covers repointing and can suggest names of professionals, contractors and specialists.
- supplier figure RN-ITP3R3 cited
Alliance Remedial Supplies
A remedial supplier's product page for 8 mm helical replacement wall ties in boxes of 100, in lengths of 195 to 300 mm, priced £113.45 to £177.03.
- supplier figure RN-DDI8WM cited
Ancon
A wall tie manufacturer's technical note setting out the spacing, density and embedment that PD 6697 and Approved Document A call for, including the closer spacing required around openings.
- supplier figure RN-N0LGMA cited
Ancon
Ancon's technical note on wall tie standards, summarising the PD 6697 Types 1 to 4 with their uses and height limits.
- supplier figure RN-5Q7WVJ cited
Ancon
Ancon's wall tie range, showing a PD 6697 Type 4 light-duty tie designed to replace the butterfly tie.
- supplier figure RN-HISKPP cited
B&Q
B&Q product page for Tarmac's 25 kg multipurpose ready-mixed mortar, giving the maker's coverage: 25 standard bricks, 20 standard blocks with a 10 mm joint, or 1.25 m2 of render at 10 mm.
- supplier figure RN-YA60KP cited
British Board of Agrément (published by Catnic)
The BBA certificate for Catnic's heavy and extra heavy duty cavity lintels. It specifies hot-dip galvanised steel to BS EN 10346 with Z275 or Z600 coatings and a polyester powder finish.
Cited in Lintels Explained: Steel, Concrete & Stone, Lintels: Types & Sizing.
- supplier figure RN-OITPGS cited
Catnic (Tata Steel UK)
Catnic's lintel product selector brochure. It states the company has made steel lintels for over 50 years and gives its ranges, weights and installation guidance.
Cited in Lintels Explained: Steel, Concrete & Stone, Lintels: Types & Sizing.
- supplier figure RN-8SYJXG cited
Catnic (Tata Steel UK)
Catnic's technical guide to supporting a steel lintel. It gives the nominal minimum end bearing, how that sets the ordered length against the clear span, and the bedding the bearing needs.
- supplier figure RN-EQ6BI0 cited
Cemex UK
A mortar maker's product page for retarded ready-to-use mortar. It says the mortar is guaranteed to stay usable for two working days and offers advice on retardation.
Cited in Bricklaying Bonds & UK Brick Sizes.
- supplier figure RN-Q0X1Q7 cited
EcoTherm Insulation (Kingspan Insulation Ltd)
Thermal laminate: PIR core bonded to 12.5 mm Gyproc Type A plasterboard to EN 13950: 2014. Insulation core lambda 0.022 W/mK; plasterboard component lambda 0.19 W/mK. Product thicknesses 37.5 to 82.5 mm (25 to 70 mm of insulation plus 12.5 mm board). Published R-values and typical U-values on a 215 mm dense blockwork wall with 10 mm polymer render: 25 mm insulation R 1.10, U 0.57 battens / 0.56 dot and dab; 30 mm R 1.35, 0.51 / 0.50; 40 mm R 1.80, 0.42 / 0.40; 50 mm R 2.25, 0.36 / 0.34; 60 mm R 2.70, 0.32 / 0.30; 70 mm R 3.15, 0.28 / 0.26 W/m2K. Fire: Eco-Liner achieves European Classification (Euroclass) B-s1,d0 when classified to BS EN 13501-1: 2018, supported by test reports WF 546613 (EN 13823) and WF 516756 (EN ISO 11925-2).
- supplier figure RN-S116B1 cited
Forterra
A brick maker's guide to the five most common UK bonds. It describes stretcher bond as easy to lay and the most economical bond, used extensively in single skin walls.
Cited in Bricklaying Bonds & UK Brick Sizes.
- supplier figure RN-UJ805R cited
Forterra
Thermalite Hi-Strength 7 Block. Compressive strength 7.3 N/mm2, design thermal conductivity (protected, 3%) 0.185 W/mK, dry density 730 kg/m3, face size 440 x 215 mm. Forterra position it for homes above 2.5 storeys and room-in-roof construction. Reaction to fire class A1, sound reduction 41-50 dB depending on block thickness. Manufactured to BS EN 771-4, compliant with Masonry Wall Robust Details and supporting Approved Documents A, B, E and L.
- supplier figure RN-O7W31K cited
Forterra
Thermalite Party Wall block. Design lambda 0.16 W/mK, dry density 660 kg/m3, face size 440 x 215 mm. Weights quoted at a typical as-received moisture content of 23% with moisture equilibrium about 3% protected and 5% exposed. Intended for separating walls between dwellings where Robust Details apply.
- supplier figure RN-J2DJG9 cited
Forterra
Thermalite Shield Block 3.6. Compressive strength 3.6 N/mm2, design lambda 0.15 W/mK, dry density 600 kg/m3, face size 440 x 215 mm, height 215 mm, length 440 mm. Widths and weights: 50 mm 3.8 kg, 75 mm 5.7 kg, 100 mm 7.6 kg, 140 mm 10.6 kg, 150 mm 11.3 kg, 200 mm 15.1 kg, 215 mm 16.3 kg. Weights are quoted at a typical as-received moisture content of 23%, with moisture equilibrium about 3% protected and 5% exposed. Used for external walls, foundations, partitions and separating walls.
- supplier figure RN-RJ032Z cited
Forterra (London Brick)
London Brick Commons, 65 mm, made at Kings Dyke. Manufactured to EN 771-1. Dimensions 215 x 102.5 x 65 mm. Compressive strength 25 N/mm2, configuration frogged with 14-20% voids, dry weight 1.95 kg, active soluble salts S2, dimensional tolerance mean T2, manufacture type pressed. Thermal conductivity lambda 10,dry 0.45 W/mK and 0.75 W/mK exposed at 5% moisture. Forterra sell commons as utility bricks, not facing bricks, so colour, texture, chipping, hairline cracks and crazing may vary. London Brick is available in the standard 65 mm size with four bricks also in 73 mm, which is what makes it the usual match for an extension to a mid-century house.
Cited in Bricks Per 1000 Cost: 2026 UK Price Guide, Types of Brick: Facing, Engineering & Common.
- supplier figure RN-HU3368 cited
H+H UK
Celcon High Strength Grade aircrete block. Compressive strength 7.3 N/mm2, thermal conductivity 0.18 W/mK, dry density 730 kg/m3, widths 100 mm to 355 mm. Covered for beam and block floor infill by BBA certificate 05/4275, which applies to all Celcon grades.
Cited in Concrete Blocks: Aircrete vs Dense vs Hollow, Padstones, Bearings & Wall Plates Explained.
- supplier figure RN-5V98H2 cited
H+H UK
Celcon Solar Grade aircrete block. Compressive strength 2.9 N/mm2, thermal conductivity 0.11 W/mK, dry density 460 kg/m3. This is the lowest lambda block in the Celcon range and is the one specified where the inner leaf has to carry the U-value. Page links the Solar Grade 2023 datasheet, the Celcon Blocks 2023 datasheet and pack information.
- supplier figure RN-5KTFKZ cited
H+H UK
Celcon Standard Grade aircrete block, product code S. Compressive strength 3.6 N/mm2, thermal conductivity 0.15 W/mK, dry density 600 kg/m3. UKCA marked with separate certificates by product and thickness, including SCP100, SCP140, SCP150, SRC075, SRC100, SRC140, SRC150 and SRC215, so the range runs from a 75 mm to a 215 mm block. Supporting technical data sheets on the page cover fire resistance (TSD01), masonry movement (TSD02), characteristic strength of masonry (TSD03), U-values (TSD04, July 2026), fixings (TSD20), block weights (TSD43), external render (TSD45), sound and Robust Details (TSD57) and mortar yields (TSD62). BBA certificate 01/3816 Sheet 1.
Cited in Lintels Explained: Steel, Concrete & Stone, Mortar Mix Ratios & Types: Which Mix for What.
- supplier figure RN-2JM9A9 cited
H+H UK
Celcon Super Strength Grade aircrete block. Compressive strength 8.7 N/mm2, thermal conductivity 0.18 W/mK, dry density 730 kg/m3. Same lambda and density as High Strength Grade but 1.4 N/mm2 more compressive strength, which is the reason to specify it. BBA certificate 05/4275 for beam and block floor infill.
- supplier figure RN-EGCKI9 cited
Helifix (Leviat)
DryFix is a one-piece grade 316 stainless steel tie driven in with an SDS hammer drill and a Power Driver Attachment, needing no resin, grout or mechanical expansion. It works in brick, block, concrete, hard mortar and timber, in cavity and solid walls, hollow materials and close to edges, and the installed tie sits recessed below the face of the masonry. Multiple drip points stop water crossing the cavity, and it can be driven through insulation without affecting thermal performance. System components are the DryFix tie, RP drill bits for pilot holes, the Power Driver Attachment and extension, and a Load Test Unit with Pull Test Key. Variants: DryFix Terracotta for delicate terracotta, DryFix RenderPin for loose render and DryFix Asymmetric for a soft outer leaf on a hard inner leaf.
Cited in Cavity Wall Tie Failure: Signs & Repair, Cavity Wall Ties: Types, Spacing & Replacement.
- supplier figure RN-4MPZFM cited
Ibstock Brick
Ibstock's brickwork dimension tables, hosted on the maker's content delivery network. They state the co-ordinating size of 225 x 112.5 x 75 mm, which includes 10 mm joints.
Cited in Bricklaying Bonds & UK Brick Sizes.
- supplier figure RN-46GC15 cited
Ibstock Brick
Ibstock's guidance on setting out brickwork, hosted on the maker's content delivery network. It says a design, including openings, should be set out to brick co-ordinating dimensions to avoid cutting.
Cited in Bricklaying Bonds & UK Brick Sizes.
- supplier figure RN-S6H5GE cited
Imperial Bricks
A brick maker's guide to imperial and metric brick sizes; it gives the metric brick as 215 x 102.5 x 65 mm and imperial bricks as about 228 x 108 mm with heights of 50 to 80 mm.
- supplier figure RN-JIYLQJ cited
James Hardie
Medium density fibre cement weatherboard with a ColourPlus finish. Thickness 8 mm, length 3600 mm, width 180 mm with a 150 to 180 mm visible surface. Weight 7.4 kg per piece; 1.85 pieces per m2 including overlap. Fire Classification A2-s1, d0. Cedar or smooth texture, 21 standard colours.
Cited in House Cladding Cost: 2026 UK Price Guide.
- supplier figure RN-CVW55A cited
K Rend (Kilwaughter Minerals)
Water repellent, cement based, polymer modified self coloured render supplied in 25 kg sacks, Kitemarked and CE marked to BS EN 998-1:2010. Mixing 4 to 5 litres of clean water per 25 kg sack, 10 minutes mixing, open time approximately one hour. One coat coverage 1.6 kg per mm thickness per m2; one coat requires approximately 26 to 32 kg/m2 at a nominal 16 to 20 mm thickness, normally applied in two passes. Kitemark classifications: compressive strength CS II, capillary water absorption category W2, thermal conductivity P=50% 0.43. Applied with a 12 mm or 14 mm mortar nozzle, levelled to 4 to 8 mm per pass, with most finishes at a recommended finished thickness of 12 to 14 mm and a minimum 10 mm of coloured K Rend left.
Cited in House Rendering Cost: Whole-House Render Prices (2026).
- supplier figure RN-JB4AKZ cited
Lawsons
A builders' merchant product page for one 140 mm 7.3 N/mm² Celcon high-strength aircrete block, showing its price including and excluding VAT.
- supplier figure RN-FKPO76 cited
Plasmor
Plascon dense aggregate block. Strengths 7.3 N/mm2 and 10.4 N/mm2, both at a dry density of 1900 kg/m3. Thermal conductivity K 1.13 W/mK at both strengths, which is roughly ten times the lambda of an aircrete block and the reason dense blocks are kept out of the insulated leaf. Sizes 100 mm and 140 mm in both strengths, solid. Work size 440 x width x 215 mm, coordinating 450 x width x 225 mm. Pack coverage 7.2 m2 at 100 mm and 4.8 m2 at 140 mm.
- supplier figure RN-R9LIZ1 cited
Reclaimed Brick Company
A reclamation supplier's page on reclaimed imperial bricks for matching period brickwork; it states the typical price per reclaimed imperial brick.
- supplier figure RN-623WBC cited
Selco Builders Warehouse
Selco's product page for a pack of 250 grade 304 stainless Type 4 housing wall ties at £37.05 excluding VAT, about 15p a tie.
- supplier figure RN-YW9K5P cited
Sika Ltd
The maker's data sheet for a standard liquid mortar plasticiser to BS EN 934-3. It gives a consumption of 125 to 250 ml per 50 kg of cement, added to the gauging water.
Cited in How to Make Mortar.
- supplier figure RN-860P5G cited
Siniat
Manufacturer datasheet for standard drylining plasterboard. A 2400 x 1200mm sheet weighs 17.3 kg at 9.5mm, 23.0 kg at 12.5mm and 28.8 kg at 15.0mm, equivalent to 6.0, 8.0 and 10.0 kg/m2, which is why a 12.5mm 8 by 4 sheet is a two person carry up a staircase. Thermal conductivity is 0.19 W/mK, giving a thermal resistance of 0.050 m2K/W at 9.5mm, 0.066 at 12.5mm and 0.079 at 15.0mm, so plasterboard contributes almost nothing to a wall U-value on its own. Reaction to fire is Euroclass A2-s1, d0. The core is aerated calcium sulphate di-hydrate between paper liners with a tapered edge for jointing. Transversal breaking load is at least 160N. Fixings are self drilling screws for metal up to 0.7mm and heavier screws for metal up to 2.5mm, or GTEC High Thread Screws into timber.
Cited in Plasterboard Types & Sizes Explained.
- supplier figure RN-5EVKJ2 cited
SOPREMA UK (Celotex)
PIR insulation board with aluminium foil facings on both sides, boards 2400 x 1200 mm. Declared thermal conductivity (lambda D) 0.022 W/mK. Thickness range 50 mm to 100 mm. Compressive strength 140 kPa. BBA Certificate 25/7318 covers pitched roof, dry lining and floor insulation. Fire: SOPRATHERM GA4000 achieves a reaction to fire classification of Euroclass F in accordance with BS EN 13501-1.
Cited in External Wall Insulation (EWI) Systems & Finishes, Floor Insulation Materials & Build-ups, Loft Insulation Guide: Types, Costs & Recommended Depth.
- supplier figure RN-5SDEMT cited
SOPREMA UK (Celotex)
Thermal laminate: rigid PIR core bonded to 12.5 mm tapered edge plasterboard, boards 2400 x 1200 mm. Declared thermal conductivity of the PIR core 0.022 W/mK. Overall thickness range 37.5 mm to 77.5 mm (PIR 25 mm to 65 mm plus 12.5 mm board). BBA Certificate 25/7366 for internal wall dry lining and pitched roof ceiling applications. Fire: SOPRATHERM PL4000 achieves a reaction to fire classification of Euroclass B-s1, d0 in accordance with BS EN 13501-1.
- supplier figure RN-PSVTBP cited
Stressline Limited
A UK prestressed lintel maker's product page and FAQ. It states the design concrete strength of its lintels and that they are made to BS EN 845-2.
- supplier figure RN-Q5WZVI cited
Stressline Limited
A prestressed lintel maker's load-span data sheet. It gives 15.3 kg per metre for the 100 x 65 lintel, so about 18 kg for a 1.2 m unit.
Cited in Lintels Explained: Steel, Concrete & Stone, Lintels: Types & Sizing.
- supplier figure RN-35YC6T cited
Stressline Limited
A UK prestressed lintel maker's product page. It lists its common sizes as 100 x 65, 100 x 140, 215 x 100 and 215 x 140 mm.