Premium architectural acoustic doors designed to meet stringent BS and EN standards for local commercial and residential sectors.
London remains one of the world's most dynamic yet acoustically challenging environments. With the rapid expansion of high-density mixed-use developments, build-to-rent projects in areas like Wembley and Canary Wharf, and the concentration of world-class recording and post-production facilities in Soho and Shoreditch, noise control is a primary engineering concern.
Building Regulations Document E (Resistance to Sound) sets strict performance requirements for inter-dwelling walls and door assemblies in the UK. For premium residential buildings, hotel guestrooms, and commercial offices, achieving acoustic insulation of Rw 35dB to Rw 45dB is no longer just a luxury specification—it is a legal compliance necessity.
For recording studios, home theaters, and executive boardrooms, the requirements are even more stringent, often demanding high-mass, multi-layered wooden composite doors capable of mitigating low-frequency rumble while maintaining fire-safety classifications up to FD90.
How we achieve high-performance decibel attenuation without compromising aesthetic integration.
Standard timber doors act like drums, transferring sound energy. Our studio doors feature an engineered core comprising high-density mineral wool, mass-loaded vinyl (MLV) decoupling layers, and structural MDF panels. This composite sandwich absorbs high frequencies while dampening low-frequency mechanical vibrations.
When a sound wave hits the front face of our custom studio door, the sound energy is partially reflected, but the majority is forced through alternating densities of materials.
By combining timber veneer, high-performance acoustic plasterboards, viscoelastic damping compounds, and perimeter neoprene compression seals, the mechanical vibration is converted into heat energy. This process is crucial for achieving high sound transmission loss in critical environments like mixing rooms and vocal booths.
A global leader in high-performance structural, security, and specialized acoustic wooden door systems.
Zhejiang Larsom Door Co., Ltd. is a professional manufacturer specializing in the research, development, production, and global sales of high-quality security doors, armored doors, steel-wood doors, and customized entrance door solutions. Since its establishment, Larsom Door has been committed to providing customers around the world with safe, durable, and stylish door products.
Today, the company operates a modern manufacturing facility covering more than 16,000 square meters, supported by an experienced team of over 160 skilled employees. With advanced production management and efficient manufacturing systems, our daily production capacity exceeds 200 sets of premium doors, enabling us to meet both large-scale projects and customized orders with reliable delivery.
To continuously improve product quality and manufacturing efficiency, Larsom Door has invested heavily in advanced automated production equipment, including CNC laser cutting machines, CNC bending machines, automatic welding systems, high-speed turret punching machines, automatic sanding machines, and modern powder coating production lines. These advanced facilities, combined with strict quality control procedures, ensure that every door meets international quality standards.
Quality is the foundation of our business. Larsom Door strictly implements comprehensive quality management throughout every production process, from raw material selection to final inspection. Our products comply with international quality standards and have earned an excellent reputation among customers worldwide.
Today, Larsom Door exports its products to more than 130 countries and regions, including Europe, the Middle East, Africa, South America, Southeast Asia, and Central Asia. Our major customers include building contractors, real estate developers, wholesalers, distributors, and importers. With rich experience in OEM and ODM manufacturing, we provide flexible solutions for customers seeking customized branding and product development.
Our complete integrated workflow ensures high-tolerance accuracy and exceptional acoustic dampening performance.
Sourcing acoustic timber doors from global factories to the UK requires rigorous logistical coordination. Wooden door systems are highly sensitive to humidity variations and shipping transit damage.
At Zhejiang Larsom Door Co., Ltd., we have established a specialized export workflow to service major ports including the Port of London Gateway and Port of Felixstowe.
Connect with our engineering division today to customize acoustic properties, frame styles, and fire-resistant parameters.
Send Inquiry NowExplore our complete production lines designed for commercial office blocks, schools, villas, and entertainment hubs.
Critical answers for architects, acoustic consultants, and building surveyors sourcing for London developments.
Rw (Weighted Sound Reduction Index) is the European and British standard (BS EN ISO 717-1) for measuring acoustic performance, calculated in decibels. STC (Sound Transmission Class) is the equivalent American standard (ASTM E413). While they are tested differently, their values are similar. A door with an Rw of 40dB is comparable to an STC 40 door. We provide compliance data sheets matching both frameworks.
Our fire-rated doors are tested and certified to British standard BS 476 Part 22 and European EN 1634-1. We utilize certified cores and hardware configurations, complete with intumescent perimeter seals that swell under intense heat, blocking toxic gases and containing fires for 30, 60, or 90 minutes respectively.
Yes. We offer fully bespoke dimensions, specialized jamb designs, and multiple high-end surface finishes including natural walnut, oak, poplar, and pre-finished paint options. Additionally, hidden hinges and integrated drop-down seals are customized to match local high-end architectural intents in residential developments across Mayfair, Kensington, and Westminster.
Manufacturing for customized orders takes approximately 20 to 30 days depending on the volume and configuration complexity. Ocean transit from Ningbo port to Port of London/Felixstowe takes around 30 to 35 days. For large commercial developments, we advise clients to plan procurement timelines 65 to 75 days in advance of the required on-site installation date.
Without a proper bottom seal, a door's acoustic rating can drop by up to 10dB due to flanking sound transmission. Our heavy-duty mechanical drop seals automatically plunge when the door is closed, sealing the gap with the threshold plate and ensuring the assembly achieves its rated decibel performance.
Larsom Door
