I'm not saying houses don't have problems but I'm sure you'll agree its the same with any product or industry. For those of you that are "Anti Cavity wall Insulation" I would suggest taking a step back and listening to those who know what they are talking about. Its a signifficant improvement to most properties and provides energy savings and significant improvements to your comfort zone. Besides, why else would there be funding available? Plus It is an extremely highly regulated industry backed up with extremely high levels of insurance.