External wall insulation in Trim
Direct external wall insulation contractor serving Trim, Co. Meath. Certified Baumit systems with direct SEAI grant deduction.
We install NSAI-certified Baumit external wall insulation systems across Trim, covering Knightsbrook, Manorlands, Effernock, and rural dwellings. Direct in-house crews, SEAI grants deducted from invoice, and custom aluminium window sills from Cills.ie.
Planning Regulations in Trim
Planning Authority: Meath County Council
Standard suburban homes in Trim are exempted development. For period properties or structures in Trim’s historic Architectural Conservation Areas, consult Meath County Council before altering the facade finish.
2026 SEAI Grants in Trim
We process your SEAI grant paperwork directly and deduct the grant value from your invoice.
Step 1 of 3
1. Property Profile
Select your building details to start your out-of-pocket calculation.
*Note: Properties must be built and occupied before 2011 to qualify for the SEAI grant.
NSAI-Certified Baumit Systems Installed in Trim
Every wrap in Trim includes bespoke powder-coated aluminium window sills fabricated by our sister workshop, Cills.ie.

Baumit EPS System · Trim
NSAI-certified graphite EPS boards mechanically anchored and bonded, finished with weather-resistant SilikonTop silicone render and custom Cills.ie aluminium sills.

Baumit openSystem & Sto (on request)
Vapour-permeable breathable systems for solid masonry walls, with unclipped gas meter box brackets and sleeved wall ventilation. Sto systems also installed on request.
Frequently Asked Questions (Trim)
How much does external insulation cost in Trim?+
Semi-detached homes in Trim cost €13,000 to €19,000 gross (net €7,000 to €13,000 after €6,000 SEAI grant). Detached houses receive an €8,000 grant.
Do you work on period properties in Trim?+
Yes. For solid masonry or historic homes, we specify vapour-permeable Baumit openSystem or mineral wool insulation to maintain breathability.
Who handles the SEAI grant paperwork in Trim?+
Isotherm handles all technical pre-works approvals and deducts the grant directly from your invoice.
Book your on-site wall survey in Trim
We survey your property, specify the certified Baumit system, calculate your SEAI grant, and carry out the installation with our direct crews.