WA state landlord tenant laws, landlord's responsibilities for repairs

You likely should review your facts and options with an attorney.

Is the front door yours to use exclusively? Do other tenants use the front door? If not, it would be unusual that the landlord would be responsible for a front door used exclusively by your business and damaged in a burglary. Most commercial leases limit the landlord's responsibility to the major items (such as roof, external walls, etc.)

Improperly deducting rent may very well result in an unlawful detainer (eviction) by your landlord.

Also, your insurance company does not have your best interest in mind. The fewer claims it pays the more money it makes.

Your attorney should review your rental agreement to see what you agreed to.