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Hertfordshire · HP3

Upstand and kerb repairs in Hemel Hempstead

Dealing with a rotten or leaking kerb in Hemel Hempstead (HP3)? We repair, raise, insulate or rebuild the kerb the lantern sits on and re-cover it, with a fixed price agreed in writing first.

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We carry out upstand and kerb repairs in Hemel Hempstead and across the HP3 area. The upstand, or kerb, is the raised frame the lantern sits on.

Roofer dressing EPDM membrane up the timber kerb under a roof lantern

What you might be seeing

  • Water appearing below the lantern rather than from the glass
  • Soft or spongy timber at the base of the lantern
  • Roof membrane not lapped up the kerb, or peeling off it

What usually causes it?

Kerb too low

If the kerb doesn't rise enough above the finished roof, water sits against the joint during heavy rain.

Membrane not dressed up

The flat roof covering should run up the kerb and be trimmed or flashed. If it stops short, water gets behind it.

Covering Hemel Hempstead and nearby

Leaf fall from garden trees is the most common cause of eaves overflow on suburban extensions. If your lantern sits near trees, clearing the eaves channel each autumn prevents a lot of drips.

Hemel Hempstead is around 5 miles from St Albans, and both are within our Hertfordshire coverage.

Neighbouring places we cover include Berkhamsted (5 miles), St Albans (5 miles), Harpenden (6 miles).

How much should it cost?

Guide price, per lantern£395–£1,295 ex VAT£474–£1,554 inc VAT

Guide price for upstand and kerb repairs: £395–£1,295 ex VAT (£474–£1,554 inc VAT), per lantern. Towers or scaffold, where needed, are priced into the quote. Your fixed price is confirmed in writing before any work starts.

Do you need permission in England?

Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in England. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations 2010; we confirm in writing which route applies before any replacement. Listed buildings need listed building consent from the local council for alterations, and conservation areas can have extra controls; like-for-like repairs are treated differently from changes, so check with the council's conservation officer first.

How does it work?

  1. Send photosWhatsApp or upload a few photos and tell us when it leaks.
  2. Guide priceWe reply with a guide price and whether a visit is needed.
  3. Fixed price in writingYou approve the price and the date before anything starts.
  4. Repair and testWe fix what's failed, water-test where it matters, and send photos.

Upstand and kerb repairs in Hemel Hempstead: questions

Do you cover Hemel Hempstead?

Yes. We cover Hemel Hempstead, including the HP3 postcode area, as part of Hertfordshire. Send photos by WhatsApp or the form for a free guide price, and we'll confirm the fixed price in writing before any work starts.

Can you repair a lantern someone else installed in Hemel Hempstead?

Yes. We repair lanterns whoever fitted them. If yours is still under the installer's warranty, contact them first so you don't affect it.

Can you add insulation to the kerb?

Yes. Insulated kerbs reduce cold bridging and help with condensation around the opening.

Will my ceiling need repairing?

If water has soaked the lining it may need making good after the leak is fixed; we can advise, but internal decorating isn't included unless quoted.

Other lantern repairs in Hemel Hempstead

Upstand and kerb repairs near Hemel Hempstead

More about upstand and kerb repairs · All roof lantern repairs in Hemel Hempstead

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