Sj Donnelly Ltd

Since 2005, S J Donnelly Ltd has grown from a one-man operation into a trusted choice for external wall insulation and rendering across the region. With more than 20 years of hands-on experience, we've earned a reputation for doing the job right reliably, professionally, and with real attention to detail. Led by our director, Sam Donnelly, who brings decades of industry know-how, we treat every project as if it were our own.

We're proud to be TrustMark approved and CHAS Accredited, so you can feel confident your property is in safe hands. We specialise in applying External Wall Insulation (EWI) to all types of solid wall properties, from cosy bungalows to large flat blocks. By reducing heat loss in winter and keeping your home cooler in summer, EWI cuts energy bills and creates a more comfortable living environment.

We offer a versatile selection of rendering finishes to suit your property's style, including silicone, acrylic, scratch render, brick effect, dry dash, and brick slips. We also provide professional lime rendering services for traditional and modern properties, applying breathable lime-based render to interior and exterior walls to improve durability, weather resistance, and appearance. Our team works across heritage buildings, renovations, and new developments using traditional methods and environmentally conscious materials.

We understand the importance of breathable materials when carrying out lime rendering, as lime render allows moisture to escape naturally, helping to reduce trapped damp and supporting healthier internal conditions.