welcome to fourwalls

We are a multi-disciplinary practice that specialises in building performance evaluation and performance monitoring. Our work spans from single project technical support through to industry-wide research and informing policy.

latest news

latest tweets

  • RT @ShellyMBoulder: 1/Here is my take. I was panicked back in March when COVID hit because I did not understand the transmission route and…

  • Thank you Cath. I hope the importance of ventilation is starting to gain some traction! https://t.co/OJBlyFf67T

  • RT @HenkPoley: @ShellyMBoulder Yep, the face shields by themselves are not a good solution: https://t.co/fGRYB34zWp See them as a replacem…

  • RT @ShellyMBoulder: Stop focusing on cleaning surfaces and spraying toxic disinfectant in indoor spaces. Instead focus on improving ventila…

  • RT @MicroLevitator: Much discussion lately in aerosol/disease transmission communities about the “5 micron cutoff” where droplets supposedl…