close up view of sauna stove that is being built from fire resistant material in undeveloped interior laid out of foam blocks in

building material fireproof block incombustible fire brick handle ovenproof refractory masonry heatproof bricks cement technology repairing furnace mortar spatula reconstruction renovating development brickwork red construct bar nobody area traditional tool renovation fireplace unfinished build structure modern stone construction interior room oven sauna stove stones indoor heater leisure pipe close view being built resistant undeveloped laid out foam blocks country house under