SINGLE STOREY NZEB EXTENSION TO TWO STOREY DETACHED PERIODHOUSE IN DROGHEDA CO.LOUTH

SINGLE STOREY NZEB EXTENSION TO TWO STOREY DETACHED PERIODHOUSE IN DROGHEDA CO.LOUTH

Floor Area– 70 sq.m

Brief

Open plan kitchen / dining /family room, light filled & spacious, energy efficient, low maintenance, traditional style, functional space.

Planning

Planning Permission granted  Autumn 2020.

Planners liked the way the composition of extension & pergola improved the appearance of the original  house which had been randomly extended previously in a haphazard manner.

Design Concept

Traditional ‘Orangery’ style  design , moulded cornice parapet with aluclad sash windows symmetrically arranged each side of french doors, which lead out to morning & afternoon /evening patios  which is screened by a curved pergola structure.

Flat roof with anthracite Sika trocal finish  and Triple Glazed  lantern & pyramid roof lights ,a restricted palette of natural high quality materials Silicone white render , Aluclad TG windows, Trocal  roofing, granite paving , composite pergola screens.

Construction Method

Solid concrete block on flat with External insulation system ( ETICS) combined with Thermal lite blocks at critical junctions to reduce Linear Thermal Bridging ( LTB ) , metal deck & in situ  concrete flat roof , airtightness membranes & taping in conjunction with  airtight plaster finish internally to external walls, triple glazed windows & doors.

Renewables

Air to water electric heat pump for space & water heating used in conjunction with UFH

DCV ventilation with heat recovery.

100% Low energy lighting ( LED ).

Energy Rating

Preliminary BER B2 – To comply with TGD –L Nzeb  ( upgraded from C3 )

Airtightness target – Q50 <2.5m3/h/m2 to comply with TGD –F

Status

Pre Contract – Start on Site delayed due to C-19 restrictions due for completion Autumn 2021.