Why Does My Wi-Fi Keep Dropping in One Room? A Crawley Engineer's Guide

Honest, jargon-free advice from Criddle Computer Care on why home Wi-Fi drops out in the same spot every time — and the fixes worth trying before you spend a penny.

You're on a video call in the spare bedroom. Your face freezes. Everyone else on the call has to say your name three times before you realise. You wander into the hallway and suddenly you're back. Same house, same router, same laptop — one room's fine, the other's a black hole.

It's one of the most common jobs that comes through the door at Criddle Computer Care. Homes across Crawley, Horsham and the surrounding villages have the same Wi-Fi black spot: the office at the end of the extension, the loft conversion, the spare room upstairs that used to be a garage. The router's downstairs by the front door, and the signal just doesn't reach.

We've been solving Wi-Fi problems for Crawley homes and businesses for over eight years, and the good news is: most one-room dropout problems have the same handful of causes, and most of them are fixable without buying anything.

Here's the honest run-down — what's actually going on, what to try first, and when you genuinely do need to spend some money.

Why one room, and not the others?

Wi-Fi is a radio signal, and radio signals get weaker the further they travel and the more stuff they have to pass through. That's the whole story, but the specifics matter:

Walls kill signal. A standard internal wall drops the signal noticeably. A solid brick wall — common in older Crawley houses — knocks it out much more. Two brick walls in a row and you're on the edge of useable.

Floors are worse than walls. Going up or down through a floor with joists, insulation and floorboards is harder than going sideways through a wall. If your router's downstairs and the black spot's a bedroom above the kitchen, that's why.

Metal blocks it completely. Radiators, foil-backed insulation, metal roof panels and even large mirrors will bounce or block the signal.

Water absorbs it. Aquariums, hot water tanks and (technically) even people slow the signal down.

Neighbours interfere. In terraced houses or blocks of flats, five or six other Wi-Fi networks might be fighting for the same channel as yours.

In a typical Crawley three-bed semi, the router lives in the hall by the phone socket. Everything the signal has to reach from there — through the kitchen wall, up through a floor, past a radiator, into the box room at the back — combines to make one specific room the weakest link.

Free fixes to try first

Work through these in order. Most Wi-Fi black spots are solved by the first three.

Restart the router properly

Unplug it from the mains, wait 30 seconds (not five — the internal capacitors need time to fully discharge), plug back in and wait 2–3 minutes for it to fully re-establish. This clears out temporary faults, refreshes the wireless channel selection and often solves intermittent dropouts on its own.

Move the router if you can

Get it up high and central. Sitting on the floor behind the TV cabinet is the worst possible position. Waist height or higher, out in the open, ideally in the middle of the house rather than at one end. Even 60cm makes a real difference. If it has to stay by the phone socket, you may need a longer master-socket extension cable — cheap, easy, transformative.

Check what band you're connected to

Modern routers broadcast on both 2.4GHz and 5GHz. 5GHz is much faster but has shorter range. 2.4GHz is slower but travels further through walls. In your Wi-Fi black spot, connect specifically to the 2.4GHz network (usually named something like "SkyXXXX-2.4GHz"). It may fix it entirely.

Change the Wi-Fi channel

Most routers auto-select a channel when they start up, but they don't always pick well — especially if your neighbours' routers all started up on the same channel. Log into your router (usually at 192.168.1.1 or 192.168.0.1), find the wireless settings, and manually try channels 1, 6 or 11 on 2.4GHz. If you're not sure how, this is a five-minute remote job we can do for you.

Update the router firmware

Old firmware can cause intermittent dropouts. Most ISP routers now update themselves automatically, but not all. Check the router's admin page for a firmware version and a "check for updates" button. Worth doing once a year.

If none of these solve the problem in the black spot room, you've genuinely got a coverage issue and need to spend some money. But at least you'll know that's what you're solving, and you won't waste £50 on the wrong bit of kit.

Wi-Fi extender or mesh system? Honest comparison

✓ Mesh system (usually right)

Two or three units that talk to each other and create one seamless network across the whole house.

✓ Same speed everywhere — devices swap between units automatically

✓ One Wi-Fi name, one password, whole house

✓ Works for 3-bed houses, extensions, loft conversions

✓ Typical cost: £150–£350 for a 2 or 3-pack

The right answer for 8 out of 10 Crawley homes with a coverage problem.

! Wi-Fi extender (usually wrong)

A plug-in device that repeats your existing signal. Cheaper up front — but there's a catch.

! Halves your speed — the extender uses the same Wi-Fi radio to talk to the router and to your device

! Usually creates a separate network name you have to switch to manually

! Only helps one specific spot — the room the extender covers

! Typical cost: £25–£70

Only worth considering if the black spot is a single room and you don't need much speed there.

If you'd like a proper walk-through of a home Wi-Fi setup that actually reaches the whole house, we can plan and install one for you in a couple of hours.

When it's worth calling us in

Most of what's on this page you can try yourself over a rainy Sunday afternoon. But some Wi-Fi problems either aren't Wi-Fi problems at all, or need someone with the right kit to properly diagnose. Get in touch if:

You've tried the free fixes and it's still dropping — you probably need mesh, and we can survey your house, recommend the right kit for your layout and budget, and set it up properly.
The whole house Wi-Fi is unreliable, not just one room — this often means the router itself is failing, or your broadband line is the actual problem (not your Wi-Fi).
You've got a home office, home business, or need it to work for work — worth doing properly rather than piecing together.
You're getting a loft conversion, extension or garden office built and want it wired in properly.

Wi-Fi work falls under our standard hourly rate of £49.99/hour for on-site visits across Crawley, Horley, Horsham and the surrounding West Sussex area. Most home Wi-Fi installs are a single visit of an hour or two, plus the cost of any hardware — which we'll quote before ordering. See our pricing page for full details.

Frequently asked questions

Do I need to buy a new router?

Not necessarily. Most ISP-supplied routers (Sky, BT, Virgin, TalkTalk) are actually decent for the size of house they were designed for. The problem is usually placement or coverage, not the router itself. That said, if yours is more than five or six years old, upgrading to a modern one — or replacing the setup entirely with a mesh — is often worth it.

What mesh system do you recommend?

There isn't one right answer — it depends on the size of your house, how many devices you have, and your budget. For most Crawley homes we usually recommend something in the £150–£250 range, which handles a 3-bed comfortably. We're vendor-independent, so we'll just tell you what's actually good for your situation rather than what makes us the most commission.

Can I use powerline adapters instead?

Sometimes, yes. Powerline sends data over your electrical wiring instead of Wi-Fi. They work well in some houses and terribly in others depending on how the electrics are wired. Modern mesh is more reliable in most cases, but powerline can be a decent budget option if the black spot has a nearby power socket you can plug into.

My Wi-Fi is fine in every room but really slow — is that different?

Yes, completely different problem. Consistent slow speed usually means your broadband line itself is slow, or there's a fault on the line. That's an ISP issue, not a Wi-Fi one. Test it by plugging a laptop into the router with an Ethernet cable — if it's still slow, it's the line, not the Wi-Fi.

Do you install Wi-Fi for small offices too?

Yes. Business-grade Wi-Fi is a different job — proper access points, cabling, guest networks and so on — but the basics are the same. See our network setup and business IT support pages, or give us a call and we'll come and have a look.

Fix it properly, once

If the free fixes haven't worked and you'd rather someone came and sorted it than spent another weekend on Google, get in touch or call Bradley on 07356 295518.

We cover Crawley and the surrounding West Sussex area — Horley, Horsham, East Grinstead, Haywards Heath, Burgess Hill — and can usually be with you the same week, or same day for urgent work. No fix, no fee, 28-day warranty, honest advice.

For more straightforward, no-jargon guidance like this, browse our honest IT advice for homes and businesses across Crawley and West Sussex.