
How to Insulate a Loft
A practical guide to insulating a cold loft to current Building Regulations (270mm) — clear and prep the loft, lay the first layer between the joists, cross-lay the second layer over, and seal the hatch and eaves.
Read guideAggregates, bricks, timber, insulation, roofing, drainage and fixings, stocked in depth and priced for trade. Walk in, load up at the trade counter, or have it on your site the same day on our own lorries.
Or email admin@starhawkbm.com with your take-off and we’ll come back the same business day.
Open 7am – 5pm
Mon–Fri · 8am–12pm Sat
Local delivery
On our own lorries across the South East
Trade accounts
Volume pricing for regulars
Quality stock
Sourced from named brands
From bulk aggregates by the tonne to the small bag of nails you forgot on a Friday afternoon. Pull up, give us a call, or send the take-off and we’ll have it ready.

Sharp sand, ballast, gravel and Type 1 sub-base by the tonne.

Dense, hollow and aircrete blocks in common sizes.

Wirecut facing and engineering-class bricks.

Mineral wool batts for full-fill and partial-fill walls.

Portland, rapid-set and specialist binders for every mix.

Frame fixings, clout nails and structural screws.

High-performance rigid foam boards for roofs and floors.

Standard, moisture-resistant and fire-rated wallboard.

Concrete tiles, dry ridge kits and breathable underlay.

OSB, hardwood plywood and MDF sheet in stock.

Catnic and IG lintels plus structural steel sections.

CLS, treated carcassing, skirting and cladding.

Trowels, levels and the everyday kit a bricklayer needs.
No need to browse hundreds of product cards. Search by name or code, add quantities, and send us your list. We’ll price it and come back with delivery options the same business day.
Search
Type a product name or code just like our staff do when raising an invoice.
Build your list
Set quantities and add the lines you need to your quote list.
Same-day quote
Submit the list and we will come back with trade prices and availability.
Delivered
Confirm the quote and we will book a delivery slot on our own lorries.
Estimate quantities before you quote, or follow our step-by-step guides for the jobs we get asked about most.
Work out the volume of concrete you need for slabs, strip footings and columns.
Open toolEstimate slabs, MOT Type 1 sub-base and bedding sand for patios and pathways.
Open toolConvert metres to feet, m² to ft², m³ to cubic yards, kg to tonnes and more.
Open tool
A practical guide to insulating a cold loft to current Building Regulations (270mm) — clear and prep the loft, lay the first layer between the joists, cross-lay the second layer over, and seal the hatch and eaves.
Read guide
A practical guide to building a close-boarded timber fence panel that will outlast a dozen British winters — from setting out the line and digging post holes, to fixing the rails, featheredge boards and a gravel board.
Read guide
A practical guide to fitting uPVC guttering — work out the fall, fix the brackets at the right spacing, cut and joint the gutter lengths, fit the downpipe and test for leaks.
Read guideFamily-run since 2017, we supply trade-quality building materials across 15 counties from our own yard. We stock deep, price fair, and deliver on our own lorries.
01753428911A merchant should make your day easier, not harder. These are the services our regulars tell us they’d miss if we stopped.
Our own lorries cover the South East, with stock lines often on site the same day and bulk aggregates within 24 hours.
Bring your cutting list, walk out with a boot-load. Timber, OSB, plywood and MDF cut while you wait on the trade saw bench.
Volume pricing on aggregates, cement and steel for active trade accounts.
Email your take-off and we will quote the same day, with line-by-line pricing so you can chop and change without re-quoting.
Need help specifying a lintel or working out the cavity insulation for an extension? Our counter staff have decades on the tools.
Skip and grab-lorry hire for sites across the region. One number, one invoice.
935
Towns on our round15
Counties coveredSame-day
Stock lines24h
Bulk aggregatesSame-day across West, North and South London.
Our home corridor, fastest turnaround on stock lines.
Next-day bookings across the wider region.
Quick answers to the questions builders and self-builders ask us most often, covering delivery, trade accounts and same-day stock.
Yes, we run our own delivery lorries across Slough and the rest of the SL postcode area. Stock lines are typically delivered same-day, bulk aggregates within 24 hours. Call the trade counter for a delivery slot.
We deliver across Greater London, Berkshire, Buckinghamshire, Surrey, Hampshire, Oxfordshire and Wiltshire. See our delivery area section above for the full town list. Core towns are typically same-day; outlying areas are next-day.
Yes, trade accounts can be opened in minutes and give you 30-day terms, dedicated counter staff and volume pricing on aggregates, cement and steel.
We stock sharp sand, ballast, gravel and Type 1 sub-base by the tonne, with off-load crane gear on our delivery lorries so the material is dropped exactly where you need it on site.
Yes, bring your cutting list to the trade saw bench and we will cut CLS, carcassing timber, OSB, plywood and MDF to size while you wait.
The fastest answer is usually a quick phone call to the trade counter. For a written quote, email your take-off and we’ll come back to you.