The Mastic Doctor team standing beside their branded vans outside an office building
Hampshire · England

Construction and new-build mastic in Hook, Hampshire

Work needed on a mastic package in Hook? We assess it, carry out the work and guarantee our workmanship for 12 months.

  • A long mastic snag list close to completion
  • Frame perimeters left unsealed or poorly sealed
  • Caulk cracking where joints are moving more than expected
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
CHAS & Constructionline
£5m public liability

Construction mastic across Hook

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

How a job runs

We follow your site rules from the start: sign-in, induction and whatever permit system the building uses. With the paperwork done, the joints are worked through in the order agreed with your site contact. For a site in Hook, we plan so the whole job is done in one go where possible. Clear photographs and measurements help us bring the right products.

  1. We walk the site or review drawings to understand the package.
  2. You receive a fixed quote covering scope, products and sequence.
  3. Paperwork is agreed and applicators are inducted on site.
  4. Sealing follows the programme as areas are released.
  5. Problems we find, such as oversized gaps, are raised straight away.
  6. Final snagging is completed and the 12-month guarantee applies.

What we need from you

  • Agree which areas must stay open
  • Arrange parking or a loading space
  • Warn occupants and staff about the work

Getting a fixed quote

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to call 01277 525 020 or send photos by email with what you know.

Ask for a quote

Advice

About our construction mastic in Hook

A typical mastic package covers more than window perimeters: frame perimeters inside and out, caulking to trims and boards where the specification calls for it, sanitary silicone, kitchens, and the final snag list. One contractor for all of it keeps the responsibility in one place and gives you a consistent finish across the job. Most enquiries involve sealant knocked or painted over by other trades and frame gaps too wide for sealant alone, on internal decorators’ caulk, window and door perimeters and floor and skirting junctions. A specialist sealant contractor works differently from a general builder: on jobs in Hook, preparation and product choice get the time they need.

Around places like Hook, a lot of construction is the conversion of older buildings, and the sealant at those junctions has to cope with two materials that move differently, in a colour the planners or architect are happy with.

Work we carry out in Hampshire comes with a 12-month guarantee. Should something we installed fail, speak to us on 01277 525 020 or email us and we will come back to it.

The Mastic Doctor team standing beside their branded vans outside an office building
Location
Hook (RG27)
Region
Hampshire
Guarantee
12 months on every job
Quote
A fixed quote before we start
Call
01277 525 020
Updated
3 November 2026

Honest limits

Being straight saves everyone time. Fresh joints won’t solve:

  • Glazing units that are cracked or misted
  • Joint design decisions that belong to the architect or engineer
  • Damage to finishes by other trades after we’ve sealed

If you’re not sure, just give us a call on 01277 525 020 or send details through our quote form and we’ll give you a straight answer before you book.

Joints and surfaces we work on

  • Brick and block movement joints
  • Window and door perimeters
  • Cladding and panel joints
  • Internal decorators’ caulk
  • Sanitary and kitchen joints
  • Floor and skirting junctions

Owners, agents and contractors

CHAS accredited and a Constructionline member, we are straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.

Building owners and managing agents use us on sealant work across single buildings or whole portfolios around Hook. One quote can cover more than one site, which keeps the paperwork simple.

Common problems we fix in Hook

Three-sided adhesion is a frequent fault on new work. Bonded to the base of the joint and both sides, sealant can’t stretch evenly.

Site and facilities staff are often the first to spot these:

  • Different trades sealing to different standards
  • Perimeter gaps outside the sealant’s range
  • Window and door perimeters that won’t pass inspection
  • External joints sealed in damp or cold conditions that are now failing

Historic houses such as Stratfield Saye House (to the north of Hook) are a reminder of the older buildings in the wider area, where sealing against old stone, brick or timber needs compatible products.

What your quote should include

  • How they’ll work around occupants
  • Their public liability cover
  • What the guarantee covers, and for how long
  • Which product they’ll use, and why it suits the joint

How to choose a sealant contractor

Why it’s worth doing now in Hook

A cheaper sealant can look like an easy saving on a large package. The saving is small next to the cost of callbacks and defects. Where an alternative is genuinely suitable, we’ll say so. Sealant hardens, cracks and loses grip with age, UV and movement. Renewing it in good time keeps the building weathertight.

Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.

Why choose Mastic Doctor in Hook

  • Work to your specification and the manufacturer’s guidance
  • A fixed quote before work starts
  • Over 20 years of commercial sealing
  • Our applicators hold CSCS cards

Read how commercial sealant jobs are priced or our accreditations.

Hook: questions and answers

Will you take on work at estates like Murrell Green Business Park, close to Hook?

Yes. Estates, retail parks and business parks around Hook, Murrell Green Business Park among them, are all within reach. A few photos and the unit address let us price the work.

Do you take on work at healthcare sites like Fleet Community Hospital?

Yes, provided the work is planned with the site’s estates team. We follow the site’s permits, sign-in and infection-control procedures in every area.

Do you use the sealant named in the specification?

The specified product is what goes in. If we think an alternative would suit better, we put it to you first.

How much does the work cost?

Each job is quoted on its own details. For yours, ring 01277 525 020 or email us.

What accreditations do you hold?

We’re CHAS accredited and a Constructionline member, with CSCS-carded applicators. Public liability insurance of five million pounds is in place too.

What happens if the weather stops external sealing?

External mastic depends on conditions: each sealant has a temperature range, and the joint must be dry. External work is sequenced with some flexibility.

Is it fine to apply new sealant on top of old?

No. Failed sealant is removed and the faces cleaned back to sound, dry material first, since fresh sealant will not bond reliably to aged material.

How the job changes by surface

Window and door perimeters

A frame gap that’s too wide can’t just be filled with sealant. We check them during the first walk-round and flag any that need packing or adjusting before sealing starts.

Bathrooms, en suites and washrooms

Sanitary joints around baths, showers, basins and WCs need anti-mould sanitary silicone. Joints are cleaned, sealed and tooled neatly and baths are loaded where appropriate before sealing.

Mastic packages on Hook sites

The area within 2 miles of Hook holds several hotels. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades. Hook lies roughly 40 miles out from central London. Towns within reach of London tend to keep building, from flats to offices and schools, which keeps mastic packages in demand.

When a school such as Hook Junior School is extended or refurbished, the mastic package is often squeezed into the holidays. Extensions at sites like Fleet Community Hospital, 4.7 miles east of Hook, usually sit beside working departments, and the mastic follows strict access rules.

Hook is about 5 miles west of Fleet, in Hampshire. Any commercial site in Hook is covered. Hook is one of 723 places we cover in Hampshire. Sites around Reading have their own page, about 11 miles away.

We cover the RG27 postcode districts. We cover commercial and managed buildings on London Road, Station Road and Rookswood Close and the roads nearby. You’ll find Hook on or near the B3349. Sites close to Hook are covered too, including Hook Common (1 mile south-west), Murrell Green (1 mile east), Warnborough Green (1 mile south), Newnham (1 mile west) and Nately Scures (2 miles south-west). Bigger towns within reach include Basingstoke (6 miles west), Farnborough (8 miles east), Fleet (5 miles east), Aldershot (9 miles east), Alton (9 miles south) and Yateley (7 miles north-east).

Around Hook

Locally, jobs take us to sites close to Robert May's School. Hook has its own railway station: Hook station. A little further out are Odiham Castle (1.6 miles south) and West Green House Agricultural Museum (1.6 miles north-east). Not far away are Tundry Hill and Dogmersfield Lake.

Map of Hook © OpenStreetMap contributors
Accreditations

Trusted. Accredited. Insured.