Код:
local noDrawTex = CreateMaterial("NoDrawTex", "UnlitGeneric", {
["$basetexture"] = "vgui/ttt/icon_ak47",
["$vertexcolor"] = 1,
["$translucent"] = 1,
["$vertexalpha"] = 1
})
Material("BUILDING_TEMPLATE/ROOF_TEMPLATE001A"):SetTexture("$basetexture", noDrawTex:GetTexture("$basetexture"))
Material("BUILDING_TEMPLATE/ROOF_TEMPLATE001A"):SetTexture("$bumpmap", noDrawTex:GetTexture("$basetexture"))
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Выполнил через команду, заработало. Закрываем.