Roofing screws price in Kenya (2026): every size and box count
Roofing screws price in Kenya, October 2026: at AHIHQ Traders in Nairobi, Knicker self-drilling hex-head roofing screws cost KSh 7,830 to KSh 11,310 for a carton of 20 boxes, depending on the length (5.5 x 20mm to 5.5 x 75mm). Roofing bolts cost KSh 9,570 to KSh 12,180 a carton, in sizes from 1" to 4". Both are sold wholesale by the carton only.
Roofing screws and bolts at a glance
| Product | Sizes | Sold as | Carton price |
|---|---|---|---|
| Knicker self-drilling roofing screws, hex head | 5.5 x 20mm to 5.5 x 75mm | Carton of 20 boxes (80 to 200 per box) | KSh 7,830 to KSh 11,310 |
| Roofing bolts | 1" to 4" | Cartons of 12 to 30 boxes | KSh 9,570 to KSh 12,180 |
| Knicker magnetic nut setter socket 8 x 65mm | 8 x 65mm | Carton of 64 sets | KSh 51,040 |
Self-drilling roofing screw prices by size
Every length is sold as a carton of 20 boxes. The number of screws in a box falls as the screws get longer.
| Size | Screws per box | Carton | Carton price | Per box |
|---|---|---|---|---|
| 5.5 x 20mm | 200 | Carton of 20 boxes | KSh 8,700 | about KSh 435 a box |
| 5.5 x 25mm | 200 | Carton of 20 boxes | KSh 10,150 | about KSh 508 a box |
| 5.5 x 35mm | 200 | Carton of 20 boxes | KSh 10,730 | about KSh 537 a box |
| 5.5 x 40mm | 200 | Carton of 20 boxes | KSh 11,310 | about KSh 566 a box |
| 5.5 x 50mm | 150 | Carton of 20 boxes | KSh 10,440 | about KSh 522 a box |
| 5.5 x 63mm | 80 | Carton of 20 boxes | KSh 7,830 | about KSh 392 a box |
| 5.5 x 75mm | 80 | Carton of 20 boxes | KSh 8,410 | about KSh 421 a box |
Roofing bolt prices by size
Roofing bolts are sold by the carton, with fewer boxes per carton in the longer sizes. Ask us on WhatsApp for the count per box in the size you need.
| Size | Carton | Carton price | Per box |
|---|---|---|---|
| 1" | Carton of 30 boxes | KSh 10,440 | about KSh 348 a box |
| 1.5" | Carton of 30 boxes | KSh 12,180 | about KSh 406 a box |
| 2" | Carton of 20 boxes | KSh 10,150 | about KSh 508 a box |
| 2.5" | Carton of 20 boxes | KSh 11,020 | about KSh 551 a box |
| 3" | Carton of 18 boxes | KSh 11,745 | about KSh 653 a box |
| 4" | Carton of 12 boxes | KSh 9,570 | about KSh 798 a box |
What is the difference between roofing screws and roofing bolts?
A self-drilling roofing screw has a drill point and a hex head. Driven with a nut setter in a drill, it drills through the sheet and into a steel purlin and fastens in one step, so there is no separate drilling and no nut to hold. That makes it the faster choice on steel-framed roofs.
A roofing bolt goes through a hole drilled in the sheet and the support and is tightened with a nut from the other side. It needs access to both sides, and is used where a through-bolted fixing is wanted.
Do self-drilling screws work on timber purlins?
Self-drilling hex-head screws are designed for fixing to steel. For timber purlins and rafters, check which fixing the sheet maker specifies for timber before you buy.
Which length of roofing screw do you need?
The screw must pass through the sheet, and through the raised profile if you are fixing through the crest, and then go far enough into the purlin to hold. So the right length depends on the sheet profile, where on the profile you fix and the thickness of the purlin.
- Shorter lengths (5.5 x 20mm and 25mm) suit fixing through the flat part of a sheet and flashings to thin steel.
- Middle lengths (35mm to 50mm) suit fixing through low profiles and thicker steel.
- Longer lengths (63mm and 75mm) suit fixing through the crest of deeper profiles or through extra layers such as insulation.
If you are not sure, test one screw on the actual sheet and purlin before you buy a full carton.
How many roofing screws do you need?
Follow the fixing pattern published by the maker of your roofing sheets. The number of fixings per sheet depends on the profile, the purlin spacing, the wind exposure of the site and whether the sheet is at the edge or ridge of the roof, so there is no single correct number. Once you have the pattern:
- Count the fixings per sheet from the maker's pattern and multiply by the number of sheets.
- Add the fixings for ridges, flashings and edges.
- Divide by the number of screws per box (200, 150 or 80 depending on length) to get the boxes, then round up and allow a few spare.
Tools for fixing roofing screws
Drive hex-head screws with a Knicker magnetic nut setter socket 8 x 65mm in a drill; check it fits the screw head before you buy a carton. Cut sheets and flashings with an aviation snip or a heavy-duty tin cutter. Do not overtighten: stop once the head is snug, or you can dent the sheet.
Which one should you buy?
- Iron or aluminium sheets on steel purlins: self-drilling roofing screws in the length that suits your profile.
- Flashings and sheet-to-steel fixings on thin metal: the 5.5 x 20mm or 5.5 x 25mm self-drilling screws.
- Through-bolted fixings where you can reach both sides: roofing bolts, 1" to 4".
- Fitting a crew for a big roof: a carton of magnetic nut setter sockets.
Where to buy
Roofing screws and roofing bolts are both sold by AHIHQ Traders in Nairobi. You can see the full range in our fasteners and fixings collection, part of the wider tools and hardware range. These lines are sold wholesale only, by the carton or bag, never as single pieces. If you need only one or two packets, the honest advice is to share a carton with other fundis or a neighbouring site, or buy for stock. Collect from our trade counter at Royal Business Park, opposite Complast, Old Mombasa Road, Nairobi (Monday to Saturday, 8:00 to 17:30), or have it delivered anywhere in Kenya for a flat KSh 350, free on orders over KSh 15,000. We take M-Pesa or card. Contractors and shops can request a trade quote on our trade page, and you can send a list or ask a question on WhatsApp (+254 724 505 919).
Related guides
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- Construction site PPE checklist: what each crew member needs
Common questions
How much is a box of roofing screws in Kenya?
At AHIHQ Traders in Nairobi in October 2026, a carton of 20 boxes of 5.5 x 20mm self-drilling roofing screws is KSh 8,700, which works out at about KSh 435 a box of 200. Prices for the other lengths are in the table above.
How many roofing screws per sheet?
Follow the sheet maker's fixing pattern. It depends on the profile, purlin spacing, wind exposure and where the sheet sits on the roof, so there is no single number.
Can I buy one box of roofing screws?
No. Roofing screws are sold wholesale by the carton of 20 boxes. If you need only a box or two, share a carton with another site or buy for stock.
Do you deliver roofing screws outside Nairobi?
Yes, countrywide for a flat KSh 350, and free on orders over KSh 15,000.