Test Valley construction mastic
Our CSCS-carded applicators take on mastic packages for new-build and refurbishment projects in Test Valley and the surrounding area. Send photos or drawings for a fixed quote.
- Early adhesion failures on new external joints
- Missed perimeter joints on a new elevation
- Oversized or tapered gaps around new frames
Construction mastic for Test Valley sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Construction mastic in Test Valley
Mastic Doctor has been a subcontractor on construction projects for over 20 years. We price from drawings and the specification, agree the sequence with the site team and seal as areas are released. To price a package in Test Valley, send drawings and the specification through our quote form. We work on internal decorators’ caulk, sanitary and kitchen joints and floor and skirting junctions, and what we are called in for most is frame perimeters left unsealed or poorly sealed and snag items on joints that need redoing before handover. Looking for mastic applicators who cover Test Valley? Mastic Doctor has worked for contractors, FMs and building owners since 2005.
Construction in and around smaller places such as Test Valley is often barn conversions, small groups of houses or extensions to halls and schools. Each still needs a proper mastic package: window perimeters, facade joints and internal sealant to the specification.
Our workmanship is guaranteed for 12 months, wherever the site is. If our installation lets you down in that time, we return and fix it.
- Place
- Test Valley (SP11)
- Region
- Hampshire
- Guarantee
- 12 months on every job
- Quote
- Quoted before any work starts
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
When it isn’t the sealant
We check first that sealant really is the fix. It isn’t the answer for:
- Designing joint widths or choosing the specification (that sits with the designer)
- Approving fire stopping as compliant
- Oversized gaps that need packing or adjustment by others
Not sure which it is? You can speak to us on 01277 525 020 or email us and we will tell you honestly before you book.
Where we work in Test Valley
- Sanitary and kitchen joints
- Window and door perimeters
- Brick and block movement joints
- Floor and skirting junctions
- Cladding and panel joints
- Internal decorators’ caulk
Also near Test Valley
Also in Test Valley
Diagnose, treat, sign off
Diagnose, treat, sign off: that’s the shape of every visit. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and we finish with a walk round so the work can be signed off. For a building around Test Valley, tell us how to find it and who will meet us. Add it to your enquiry and we’ll build it into the plan.
- We price from the drawings, specification and programme you send.
- A fixed quote sets out the scope, the products and the sequence.
- You tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we confirm it with the quote.
- Work follows the programme, area by area, as rooms and elevations become ready.
- Each joint is prepared, backed to depth and sealed in the product the specification names.
- We close out snagging and hand over with a 12-month guarantee.
Getting the site ready
- Tell us your opening times and when work is allowed
- Move anything stored against the joints
- Point out parking and an unloading spot
Request a quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. Smaller jobs need nothing more than photos and a few notes.
Advice
What sets the cost
These are the things that shape the price:
- The size and state of each joint
- Removal of failed or old sealant
- Site requirements such as inductions and permits
- Whether the work must be split into stages
The product called for affects the cost, and so does the preparation. Access, phasing and site rules also count.
Before you send an enquiry
A good diagnosis starts with the right details. Let us know:
- The site address and postcode
- Specification clauses that apply
- What the building is and how it’s used
- Photos of the joints, close up and from further back
For a fixed quote, phone 01277 525 020 or email the details over, telling us the site location and the nature of the job. Our quote form is another easy route.
For managing agents and facilities managers
For main contractors, we work as the sealant subcontractor, on new build and refurbishment alike. We work to your programme, your specification and your site rules.
Hospitality, education, healthcare, office and retail clients come to us directly as well. The work is planned around how the building runs, so the building keeps working while we do.
Do you need construction mastic in Test Valley?
Swapping the specified sealant for a cheaper general-purpose product is a common cause of failure. A sealant that isn’t right for the substrate or the movement will fail ahead of time. We stick to the specified product, or put any alternative to you first.
Most enquiries start with something like this:
- Inconsistent sealant finishes from plot to plot
- Sanitary sealant damaged by following trades
- New external sealant already peeling away
- Failed sealant in an existing building being refurbished
For a contractor at a hotel such as Esseborne Manor Hotel, 1.3 miles to the south of Test Valley, the mastic often has to be finished before a reopening date.
Questions to ask before you book
- Their public liability cover
- Is the sealant right for the movement and the substrate?
- Do they follow the manufacturer’s priming guidance?
- Who will actually carry out the work
Construction mastic in Test Valley: the local picture
Test Valley sits in one of the drier corners of the country, the South East. That doesn’t stop wet spells, or frosty starts that leave panels too damp to seal, so we time external mastic for dry faces and agree it with the site team. Test Valley is about 59 miles from central London. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, which keeps mastic packages in demand.
Historic houses such as Stargroves, 2.7 miles to the north of Test Valley, are a reminder of the older buildings in the wider area, where sealing against old stone, brick or timber needs compatible products.
Test Valley is about 7 miles north of Andover, in Hampshire. Our applicators travel to Test Valley for work on mastic packages. Our Hampshire coverage takes in 723 places, large and small. For work in that direction, see our Reading page.
Work on mastic packages is covered throughout SP11, for business premises of every kind. If your building is just outside Test Valley, we cover Ashmansworth (1 mile east), Vernham Street (3 miles west), Upper Green (4 miles north), Inkpen Common (5 miles north) and Hell Corner (5 miles north). Bigger towns within reach include Basingstoke (15 miles east), Andover (7 miles south), Tadley (13 miles east), Popley (15 miles east), Tidworth (11 miles south-west) and Kempshott (13 miles east).
What’s near Test Valley
The countryside around Test Valley includes Pilot Hill.
FAQs: Test Valley
Which documents can you supply for work in Test Valley?
RAMS, insurance certificate, CSCS details: list what the site needs and we will confirm it with the quote. Our applicators are CSCS-carded, and we carry £5m public liability insurance.
Is Test Valley too far out for you?
No. Small places get the same service as large ones. We cover Greater London and the counties of the South East. Send photos and a list of what needs doing, and we’ll plan the job to need as few trips as possible.
Can fire-rated sealing at service penetrations be included?
Fire-rated sealant can be included where it’s specified, installed to the product’s tested detail. Fire-stopping design and sign-off sit with the designer and building control.
Can you work plot by plot or floor by floor?
We follow the trades through the building. Areas are sealed as they’re released by the site team.
Do you guarantee new-build sealant work?
It’s backed by our 12-month guarantee on the workmanship. Keeping other trades off finished joints prevents most problems.
Is colour matching possible?
That depends on the product specified. Some ranges are wide, others limited, so we will confirm the colours available for the specified product with the quote.
What will the job cost?
Every job gets its own fixed quote. To get one, phone 01277 525 020 or send details through our quote form with a description of the work.
Different surfaces, different methods
Kitchens and utility areas
Commercial kitchens often need hygienic or food-safe sealants. We follow the specification and seal to a smooth, cleanable finish.
Fire-rated sealant where specified
Not every penetration suits a sealant. Other products are used for some services and gaps, and we’ll tell you if the detail calls for something else. Tell us what records you need and we will confirm with the quote.