Firgrove is a small, quiet spot on the Somerset West side of the Helderberg, with a country feel and a lot of open land around it. People here mostly call us about mice from the fields, flies around animals and wasps in the sheds.
Firgrove: what drives timber pests here
Older homes and outbuildings with exposed timber can carry borer, and a beetle certificate is commonly needed when a property is sold.
You get a mix of older village houses, smallholdings with sheds and stables, and some newer homes on larger plots. Smallholdings often keep animal feed, poultry and compost, which is a standing invitation to rodents. Older homes and outbuildings with exposed timber are worth checking for borer. Sheds full of stored equipment make perfect quiet nesting spots.
Field mice and rats looking for shelter are the main call, especially after harvest and in winter. Flies around livestock and paper wasps in sheds follow in summer, and homes on the edge of open land see more spiders and the odd scorpion.
Signs to look for
- Birds pulling reed out of the roof or nesting under the eaves.
- Droppings on beams or along the top of walls under the thatch.
- Insects such as cockroaches or spiders falling from the ceiling.
- Fine powder dropping from the poles or laths onto floors and furniture below.
- Tunnels or loose patches in the thatch where rodents have been moving.
Borer in the poles and laths weakens the timbers that carry the weight of the thatch, which is heavy, and serious damage can mean replacing structural members. Rodents nesting in thatch chew electrical cables, and in a thatch roof that is a fire risk to take seriously. Insects dropping from an open thatch ceiling are a nuisance in homes and a real problem in guest lodges and restaurants. Bird nests in thatch can bring mites into bedrooms below.
A note from the field
Borer damage in thatch is often blamed on the reed, but the reed is rarely the problem. It is the poles and laths holding it up that the beetles are after.
How the treatment works
We start by inspecting the underside of the roof, the poles, the laths and the eaves, looking for borer exit holes, frass and rodent or bird activity. Affected poles and laths are treated with a borer spray or injection designed for timber, applied to the wood rather than soaked through the thatch. For insects living in the thatch, we use a targeted residual treatment on the underside, keeping it as light as will do the job. Rodents are handled with traps and tamper-resistant bait stations placed at wall plates and entry points, and we advise on bird netting or proofing at the eaves. Fire safety of the thatch itself, such as retardant treatment, is a separate specialist job and we will tell you if it looks overdue.
Want the full step-by-step? See how our thatch treatment service works.
Keeping them out afterwards
- Fit bird netting or wire at the eaves if birds keep pulling reed or nesting there.
- Ask your thatcher to check the poles and laths for borer whenever the roof is being repaired or re-combed.
- Do not store firewood or boxes against the walls under the thatch, as they give insects and rodents cover.
- Have electrical wiring in the roof inspected regularly, especially if you have had rodents.
- Have open thatch ceilings in lapas and lodges checked once a year, since problems are easy to see early.
Pricing, honestly
The price depends on the size of the roof, how much of the structure is exposed and how many poles and laths show borer activity. A small lapa with an open underside is a very different job from a double-storey home with a closed ceiling. Rodent and bird work is added where needed, and timber that is too damaged to treat has to be replaced by a builder or thatcher.
Spraying the underside of your own thatch with a garden insecticide does very little for borer, which lives inside the poles, and soaking thatch in products not meant for it can do more harm than good. We would leave borer and rodent work in thatch to someone who does it regularly. Keeping the roof clear of overhanging trees is the one thing every owner can do themselves.
Questions we get asked in Firgrove
How do I know if the borer is still active?
Fresh, pale powder below the poles and clean-edged holes point to active borer. We can tell you on inspection, or send us a photo on WhatsApp first.
Is there a guarantee?
Our treatments carry a minimum 3-month guarantee, and the report records exactly what was treated.
Do you service smallholdings and outbuildings in Firgrove?
Yes. We cover the house, sheds, stables and feed stores, and we plan bait placement so it stays out of reach of pets and livestock.
Why are there suddenly mice in my Firgrove house in autumn?
Cooler weather and work on the surrounding fields push mice toward warm, sheltered buildings. Sealing gaps under doors and around pipes early in autumn keeps most of them out.
Do you treat the thatch for fire?
No, fire retardant treatment is a specialist job for thatching contractors. We treat the pests in the roof and will point out if the thatch looks like it needs attention.
Do you come out to Firgrove for thatch treatment?
Yes. Firgrove is part of our regular Helderberg route, along with Somerset West, Macassar, Strand, Helderberg. Most bookings are done within about 48 hours, and after-hours visits can be arranged.
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